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|Eat This! (10G)||100%|
| Kill a Xenomorph with a shotgun at very close range|
You start the game with a shotgun as your secondary weapon. Press Y to equip it, and then just use it to start blasting away at the Xenos. They will charge you by nature, so it's very easy to get this achievement.
|Coming Outta the Walls! (10G)||100%|
| Kill a Xenomorph climbing on the walls or ceiling|
It's easiest to do this with a machinegun or another longer range weapon. Xenos tend to crawl on the walls and ceiling anyway, so don't even think about this one. It's sure to pop up fairly early on in the game anyway.
|Field Promotion (10G)||100%|
| Earn Rank 2 as a Marine|
Playing the campaign will allow you to gain XP to level up as a marine. Your XP is measured by a meter in the upper right hand corner of the screen. You gain XP by getting kills, completing objectives, and unlocking achievements.
|Oorah to Ashes (10G)||100%|
| Collect a Dog Tag|
Dog tags are just one of the many collectibles in the game. Here is how you can find all the collectibles in mission 1. Watch the video. See the video: Cheat Video
|Personal Friend of Mine (10G)||100%|
| Collect a Legendary Weapon|
The first Legendary Weapon in the game will be available in Mission 1: Distress. It is Hicks's Shotgun. After you protect O'Neal while he's opening the doors, go inside and take a right. Then go through the next doorway and look at the ground and you'll find the shotgun. See the video: Cheat Video
|Entry Prohibited (20G)||100%|
| Kill 10 Xenomorphs that are using vents|
Xenos often spawn by crawling out of vents, which are little black squares on the walls and stuff. There are sections in the game where you have to hold your ground and defend against the waves of Xenos. This is when you'll probably snag the achievement.
|AnotheR Day in the Corps! (20G)||100%|
| Complete Distress|
This is for beating the first mission in the game.
|Another Bug Hunt (5G)||100%|
| Complete a Challenge|
Challenges can be found by pressing the "start" button. Completing a challenge typically unlocks an achievement as well. There are three challenges available at any given time usually. There is a challenge for beating a mission in the campaign on any difficulty, so just beating the first mission in the campaign will net you this one.
|Ready to Fry Half a City (5G)||100%|
| Edit a Marine Loadout|
Press start and go to your armory. When you level up, you gain points that can be spent on the weapons to upgrade them. Go to any of the weapons and starting upgrading them and this one will pop.
|Mission 1: Distress||100%|
| Following the scenes, you will be in control of Winter. He'll show off his gun and then you'll be able to move out of this room. Go through the only door and start walking through the space-tube. A body will smash on top of it, but ignore that and keep moving forward to the door at the other end. Press X to enter, and then hang tight in the airlock.|
The subsequent door will open up eventually, allowing passage. You'll find your fellow marines scrambling to save the lives of a few injured marines on the ground. They ask you to use your motion tracker, so do that now. To equip it, press LB and start moving it around.
There will be three human blips nearby, but also a circular, unknown blip. Exit this room to reach a large hangar area. Half of a synthetic (the non-talking half) will be noted by Winter. Go to the door on the right and press X to use your torch to cut it open. This will be completed when a meter is filled after a certain amount of time has passed.
The next room is covered with icky stuff. As you explore the area, you'll notice three eggs on the ground as well as a camera that's set up. Take a right from the camera and you'll find body armor on the ground. Pick it up, and then go straight down the hall to find Keyes attached to the wall. Press X to start cutting him down.
A Xenomorph will ruin this and attack, knocking Winter to the ground. Complete the QTE by mashing on the X button, and the Xenomorph will run away. Let Winter to stand up and then pursue the Xenomorph using the motion tracker. Find it, shoot it a bunch, and then when it's dead, return to Keyes. Finish cutting him down.
Following the subsequent conversations, Winter will decide to help Keyes. Follow him through the next door and continue following him to the next room, where more Xenomorphs will attack. Get your back to a wall and just kill them as they come. Continue following Keyes and he'll lead you to stairs. Follow them up and then go through the next door with him. Retrieve the data log from
the center console, and then Keyes should take care of the Xenomorph that attacks. Wait for Keyes to finish with the door in here and then follow him through.
Down the next hallway, a Xenomorph will burst through the glass. Kill it and keep following Keyes from room to room, killing the Xenos as they show up. There will be a lot of Xenos that show up, and their acidic blood can burn away any body armor you have and also do a lot of damage, so try to keep your distance. If they get too close, click in the right stick to do a melee attack, but be ready to back up quickly to avoid taking acidic damage. Keep following
Keyes until you reach a larger room with ammo and armor on the ground. Gather these supplies while Keyes messes with the door.
Keyes will get the door open, and then idiotically toss a grenade at the ship, causing an explosion that leaves the doors locked down. Run over to O'Neal, the marine behind the makeshift barricade, and gather the supplies. There should be more armor and ammo, plus a med pack sitting on the crate if you need it.
Get your back to the hangar doors and get ready. The Xenos will come in a constant wave. Keep firing at them until the hangar doors open. You should have plenty of ammo. Your secondary fire by pressing RB will shoot grenades, so use that if the situation gets hairy, but be careful about shooting grenades too close, or else you'll die in the blast as well.
When the hangar doors open, retreat inside. Follow Keyes through the umbilical, but some chest-exploding things will happen. What follows is a scene that almost feels like a QTE, but don't worry about pressing any buttons. Return to the previous ship and sit tight as O'Neal and Winter give a status report on the situation to Cruz.
Go through the vent in the floor. Then go through the next door. Let the stabilization process occur, and then continue into the next room and check out the lab equipment. Move through the next room, follow O'Neal around the gunk, and then continue to kill the Xenos as they show up. Keep an eye out for supplies. There are plenty of med packs lying around these next few areas of the game.
You'll reach a larger room with a circular catwalk. Follow O'Neal around. Be careful of the Xenos, as they will be much more active here. Kill them as they come and then keep following O'Neal from door to door. You'll reach the upper level of this area. Kill the Xenos and follow O'Neal to the end through the next door. He'll start opening it, and will need you to protect him while he does so.
Fight off the Xenos until O'Neal can get the door open, then go through to escape. From here, go right and through the next door. You'll find armor as well as Hicks's Shotgun, which is a Legendary Weapon and will automatically replace your current shotgun. When that's done with, return to the center room and go the way opposite of the Legendary Weapon.
You'll be in the Cargo Bay Area. Follow O'Neal to the stairs. Kill any Xenos that get in the way, but try to avoid as many as possible. Follow O'Neal to the cargo bay controls and then activate the controls. Hang tight as the Xenos are sucked into the vacuum of space.
|Love at First Sight (10G)||100%|
| Survive a Close Encounter with a Facehugger|
To make a Facehugger jump on your face, approach an egg on the ground. Then mash the indicated button to avoid taking damage from it.
|Need a Deck Of Cards? (5G)||100%|
| Set up a UA 571-C Remote Sentry|
This will be done during Mission 4 as part of the main story. To pick up a turret, press X. Then to deploy it, hold RT.
|Let's Rock! (20G)||100%|
| Kill 10 Xenomorphs in a game with the M56A2 Smart Gun|
The Smart Gun is first available in the game during Mission 4. You will then move through a hallway filled with Xenos, so getting this one is easy.
|Mission 2: Battle for Sulaco||100%|
| Grab the ammo from the center area and then take cover by pressing B. A couple of enemies will enter the control room through a nearby door. Pop out of cover to kill them one at a time. Take whatever they drop and then proceed with caution into the next room. Take a right and go through the corridor. Shoot the enemies through the window.|
Then continue to the next set of rooms. Avoid the middle area as you'll be left exposed. Go all the way to the end and you should be able to flank the next few enemies that come out of the next area that you need to go through. Loot their dead bodies and then follow O'Neal down the stairs. A health pack will be on the counter if needed.
A soldier will shut the door on you and O'Neal in the next area. Take control of the Powerloader by pressing X. Use RT to control its right arm and use LT to control its left arm. Go over to the hangar doors and press RT to rip the hangar doors open.
Follow O'Neal into the next room, and you'll find a bunch of Facehugger eggs. Shoot the eggs to avoid being attacked by Facehuggers. If one does attack you, mash on the indicated button to avoid being killed by it. Destroy the eggs as you move through this area, and kill any Facehuggers that are crawling around outside their eggs as well. Keep an eye out for ammo and the like as you
You'll be in a larger room with more eggs and a door that is electronically locked. You'll find the keypad on the wall, though not nearby. Interact with the keypad and it will unlock. Destroy the eggs, then move into the next hall and continue following O'Neal. He'll lead you to a storage room area. Cut through the door and O'Neal will be reunited with Bella. After their reunion, cut open the next door for them.
Keep following Bella and O'Neal until you reach a long hallway-like area with vehicles in the center. More soldiers will start showing up. Get behind cover and kill them. IF you hang a right, you can get on an elevated position. Kill the enemies here and then use your elevated position to flank the enemies below. Be sure to loot the mercenaries as they drop goodies such as health packs and armor. Push your way forward until the large hangar doors at the end open.
A heavy enemy will show up. Get behind cover and fire grenades at him until he dies. He'll drop a full body armor, so pick it up and then continue through the next doors. You'll come to a door that you can't open until O'Neal and Bella are near you, so wait for them to catch up. Then as soon as the door opens, kill the mercenary here and then sprint to the right.
Bella and O'Neal will go left and fight the mercenaries there. Through the railing, you can shoot a few mercenaries on the other side. Then regroup with Bella and O'Neal and finish off the enemies that they didn't kill and follow them. Call the elevator once you reach it and then ride in it.
At the top, kill your way through the enemies and then at the next door, turn around. You'll find fully body armor hidden behind a crate. Grab it and then start pushing forward through the next wave of enemies up ahead. If you start to take too much damage, hang back and let O'Neal and Bella take care of matters for you for a little bit.
Then push through the next area of enemies. You'll move through tight corridors, so be ready to take out the mercenaries as they show up. You'll then open up to another long corridor. Kill them from afar, and then a heavy enemy will show up. Throw a few grenades down the corridor and when you run out, start firing at him with all you've got until he goes down. Run down the corridor and loot everyone.
In the next room, crouch. Kill the mercenaries and then work your way to the control panel that they were messing with. Stay crouched to avoid taking fire from the mercs outside. Interact with the control panel to get the door open and then follow O'Neal and Bella through the corridors to reach the next elevator.
The next elevator will open up into a sort of school-like area. Two enemies will be at the bottom. Kill them quickly and then run down there. In the next set of halls, there will be turrets set up. At the bottom of the school-like area, you can go to the left or you can go to the right. Go to the right. Stay crouched and kill the enemies as they come. You'll be able to flank one of the turrets from here easily. Press X to deactivate the turret when you get near it. Now keep following the halls and you'll reach another turret to disable.
Move behind it quickly, disable it, and then everyone can move on to the weapon control room.
In here, immediately get behind cover. Move up, but do it slowly. There is a turret at the top of this area, so you will need to flank it. Going to the left or to the right will yield identical results. Enemies will stay behind cover mostly in this area, so utilize any grenades that you have. Get as close to the turret as possible before disabling it. Clear the area of enemies and then turn off the weapon system.
|Mission 3: Sulaco Falls||100%|
| Backtrack from the control room. Just sprint and follow your partners. There will be mercenaries as you move through the areas, so take cover and take them out before proceeding. You'll reach a hall with the air being sucked out through a partially opened door, so shoot the canister keeping the door open for safe passage.|
Loot the rooms thoroughly as well as the items dropped by the mercs. You'll reach an elevator. Get inside and use it. Then run through the next few rooms. Xenos will start attacking the mercs. You can stay behind cover and let the Xenos kill all the mercs if you want, and then start clearing them out, as the Xenomorphs are much easier to kill than the mercenaries.
Whatever you choose, start pushing forward. The walkway will give out and you will fall in the water below. Xenos will come out of the vents on the ground. Kill them and then rush to the lift and ride it up. Then resume pushing forward to the next room. Go to the control panel and interact with it in order to "run a bypass", as the mission objective states.
Continue, grabbing the body armor and ammo in each room, and kill the Xenos as well. The area will open up into a long hallway, in which there will be many more Xenomorphs to deal with, plus a couple of mercs. The Xenos will make quick work of the mercs, so take out the rest of the Xenomorphs and continue through, where you will find an elevator. Wait for the elevator to show up, then get on and activate it.
Push forward to the next major area, where you will reunite with Cruz. Kill the mercs as they show up, but stay behind cover. Sprint to the first release lock and arm it by using the computer. Then as you make your way to the second computer, the catwalk will be destroyed.
Stay crouched and slowly backtrack. There is a center room with the controls to the crane that you need to make yourself a bridge to the next console. A heavy will be guarding it. From up on the catwalk, kill him and all the enemies below. Go to the controls and use them. Then sprint back to the destroyed area of the catwalk. Use the container the crane brings up and sprint to the next console. Activate it.
|Mission 4: No Hope In Hadley's...||100%|
| Upon landing at Hadley's Hope, chill out for a while so everyone can get a grasp on the situation. Then start walking to the mining colony proper in which the bulk of the film Aliens took place. Fans of the movie will see memorable sites. Keep going until you reach an area that Cruz says is the new HQ for this operation.|
Pull the lever on the wall to get the power going. Then stand with Cruz as he debriefs everyone. Follow O'Neal through the next sequence of rooms and corridors. There are panels on the wall that you have to place motion trackers on so everyone can know where the Xenomorpsh are at all times. The fifth motion tracker you place will malfunction. Fix it, and then a bunch of Xenos will start appearing in the area.
Fight your way back to HQ. At HQ, there will be more Xenos to kill. Wipe them out, and then Cruz asks you to go back and get the turret. Backtrack to the hallway with turrets. Pick up the designated one with X and then take it back to HQ. Lay it by the ammo cache by holding RT. Then another wave of Xenos will attack.
The safest place here will be by Bishop. Hang out by him and kill the Xenos when they get close to you. If you need to restock on ammo, there is ammo by the turret, remember. When all the Xenos are dead this time, wait for Cruz to give you new orders.
You now have to make your way to the comm tower to check on Bella. You and O'Neal will be given Smart Guns. Grab it and then follow O'Neal into the next room. The partially ajar door will be fully opened. Move through the hall and then fall through the hole in the floor.
The Smart Gun will come in handy for this area. The gun will automatically aim at Xenos as they crawl around, so you really just have to shoot. Try to conserve ammo with this thing as there will be a ton of Xenos to contend with, and do that by shooting in bursts. You'll reach a room covered in gunk. Hold your ground here and waste the rest of the Xenos. If you need reprieve and
run out of Smart Gun ammo, hold LB to show the door you'll go through to reach the Comm Tower. The Xenos won't pursue you here, so you can just take potshots at them from safety.
When they start to die down, run around to make them start showing up again and continue killing all the Xenos. When they've all been killed finally, you can go through the door to start making your way to the comm tower again. However, a Xenomorph will attack Winter...
|Mission 5: The Raven||100%|
| Winter starts this mission trapped to a wall. He escapes. Press B and crouch. You'll be crouching for a good majority of the rest of the level. Move very slowly through this area. The large Xenomorph, I assume the titular Raven, will burst through the ceiling and try to swipe at you. If he succeeds, then it's a one-hit kill. So move slow so you can avoid taking damage from the Xenomorph.|
Once you get by the Xenomorph, you'll have to move through a complex sewer system. The lever to the door is being blocked by steam. There is another lever right next to the steam machine. Pull that lever to turn off the steam. Then pull the next lever to open the door to the sewer proper.
Stay crouched and keep moving. You'll see these weird husks all over the place. One of them will start moving. Whenever it starts walking around, stop moving. Wait for it to crouch into itself and then resume moving slowly through the sewer.
This part lasts forever, but it's simple. Just move by the husks. When you see one of them up and walking around, then stop dead in your tracks before continuing. There will be a lever you'll come across eventually that you can pull which will cause steam to erupt out of a nearby machine and a bunch of these Xenos will run to the machine and blow up.
Go room from room, repeating this process. You'll find a door that needs to be cut open, but be sure to blow up the walking Xenos first by pulling the nearby lever. Then cut the door open and continue. Repeat this process, going room to room, slow, and you'll be fine.
Finally, you'll meet up with O'Neal. Except he is behind a sewer gate and can't be reached for now. Continue through to the tunnel areas, and then big Xeno from earlier will show up and start chasing you. Run through the door and turn around, pressing X to weld it shut. Then go to the next door and keep doing that. As you move through each door, stop to weld it shut so the Xeno can't catch up with you.
Upon reaching the elevator, press the button to take it to the top. O'Neal will be waiting for you with a duffel bag full of your stuff. Grab it to get back all your weapons and gear. Then follow O'Neal outside. Kill all the Xenos out here and then continue following him to find Bella. She will tell you that Reid has been taken by the Xenos.
A huge crate will be lead to Reid's area. Fight your way to her, kill the Xenos around her, and then accompany Reid and Bella back to the comm tower. Now you have to protect her while she deals with it. When she's done, follow everyone into the hangar area. More Xenos will swarm in. Kill them all and then move to the next hangar area.
O'Neal will be captured by the Raven Xenomorph. After Bella and Reid get into a fight, go through the hangar doors. Drop down the ledge and then crouch. Go through the tunnel to the right as soon as Raven shows up. Kill the Xenos and then go through the next little tunnel area as soon as Raven shows up again to avoid fighting him.
Finally, you'll reunite with O'Neal right next to a Powerloader. Get inside the Powerloader. Your teammates will deal with the smaller Xenos, so focus on the big one. Just keep mashing RT to smack him with the right arm. If he gets too close, press LT to knock him back a bit. It will take quite a few swings, but finally it will be killed.
|Secreted from What? (20G)||100%|
| Kill 5 Spitters without being damaged by acid|
Spitters are everywhere in Mission 6. Don't worry about trying for this one, as there will be so many that it'd be very surprising if you didn't get this one within the first five minutes of meeting the first Spitters.
|No Need For Alarm (20G)||100%|
| Complete One Bullet without setting off the alarm|
This is actually a lot easier than it sounds. The game will tell you to be quiet when taking out the scientists, but it's actually a lot easier to just blast them away with the shotgun. As soon as you enter a room, find where the alarm is, stand by it, and then kill the scientists so that they can't ever turn on the alarm. The mercs won't bother with alarms, so just worry about killing the scientists.
|Still Got a Job to Do (20G)||100%|
|... But No Cigar (20G)||100%|
| Rescue a teammate from a Close Encounter|
A "Close Encounter" in the game is when a Xenomorph pounces on one of your teammates. This happens a couple of times during scripted moments in the single player campaign, but can occur much more frequently in co-op. Just shoot the Xeno off your allies when this happens.
|Micro Changes in Air Density (10G)||100%|
| Track 100 hostile targets with the Motion Tracker|
Just constantly use the Motion Tracker in the campaign. Press LB to bring up the tracker at any time.
|Dragged Queen (20G)||100%|
|Game Over, Man! (30G)||100%|
|Complete all Campaign levels on any difficulty.|
|Mission 6: For Bella||100%|
| This mission begins with a long stretch to the facility. Just push forward and keep shooting the Xenos as they show up. As you reach this cave system, acid-spitting Xenos will show up. They, as you can probably guess, spit acid. Their acid is honestly not that damaging, but it's better if you can kill them before they can spit any at you.|
You'll finally reach the facility, but it is in pretty bad shape. Gather the loot as you follow O'Neal and Bella through it. You'll then reach an annexed section of the facility, where there will be turrets set up in the halls. Crouch down the first hall to avoid the turret fire coming through the nearby windows.
Then go around the corner and through the door to reach this turret and disable it so O'Neal and Bella can get through. Then sprint by the second turret, and ignore the third turret as well. There will be a destroyed vent on the ground that you can crawl through that will open up to a room with a health pack. Use it if need be, and then notice the ladder.
The ladder is going up, but you can't use it for some reason. so instead, jump on the machinery to reach the upper area. Then drop down into the next room. Cut open the door, then disable the turret that's outside. Cut open the next door and you'll be able to disable the final turret and everyone can start moving through the facility together again.
You'll have to move through an outside area with mercs. Go through the crates so you can flank them. There will be a Heavy amongst them, so take him out before focusing on the other mercs. When you round the corner, lob a couple of grenades behind the barricades to take out the rest of the mercs and then continue to the elevator.
Xenos will show up and start fighting the mercs as well. Let them do their thing and then wipe out the Xenos. As you move to another outside area, be wary of the Merc in the distance with a rocket launcher. Go right and into the building as the mercs and Xenos battle each other. You can flank the mercs from here. Focus on the one with the RPG first by shooting out the windows and
shooting at him. If he fires a rocket at you, you can easily dodge it from this distance.
When the mercs are all dead, finish off the Xenos. Then run to the elevator and pull the lever.
|Mission 7: One Bullet||100%|
| Another long hallway awaits, in which you have to kill Xenos as you move. Keep pushing forward and then you'll reach an area with spotlights. The spotlights will kill anything that get in the light. Wait for the light to pass and then sprint by.|
You'll reach a cave area with Xenos and a couple more spotlights. Sprint and jump over the gap to avoid the first spotlight, then find a safe spot and start killing the Xenos. Then move by the third spotlight and you'll then see a few mercs on a bridge. You won't be able to use your weapons for this part. Wait for the mercs to leave, then continue stealthily into the facility proper.
Following the cut-scenes, you'll now have to move through the facility. The first room you get to will feature two scientists. If they hear you, they will run to activate the alarm that will in turn release a poisonous gas in the room unless you can turn it off in time. The game recommends being stealthy, but you can really just shoot them both quickly with the shotgun and then continue.
Go through the next room. Then AS SOON as you open the subsequent door, turn to the left sharply and kill the merc there. Run around the other side and kill the three or so mercs before any of them can get down the hallway. Take cover and toss a couple of grenades down the hall to kill any other mercs that happen to show up.
Continue pushing through the rooms of scientists and killing them first. You will then move back to an outside area. As soon as you get here, take a left, as an armored vehicle will show up and start firing at you. Shoot the tanks by it to light it on fire, forcing the vehicle to retreat. Kill the mercs as you move along the rocky path yourself.
Sprint forward. The vehicle will back up through an area below you. Kill the mercs down there. Grab the health pack if needed, then drop down. Sprint to cover and get a lay of the situation. You need to reach these crane controls that will be to your right, if you're facing the facility. The module you need to destroy is the center area, and the crane will take care of that as well. You need to get rid of the armored vehicle, too.
Blow up the tanks next to the armored vehicle and it will retreat again. Then start hugging the cliffside to your right as you move up. Kill the mercs one by one. The controls will be in a briefcase-looking thing up the slope to the right of the starting area. Activate the controls once the coast is clear, and the armored vehicle will be destroyed.
An RPG-equipped merc will guard the doors to the facility, so kill him. Then go into the facility. Fight your way to the control module room, where you will find out that you need to disconnect three power cells in order to allow you to control the power.
Each of the three power cells are easily accessed. There is one that is blocked by locked doors, but simply go above it and drop through a hole in the ceiling to access it. There will be two scientists guarding this cell, but only one scientist will be guarding each of the other two cells. Remove the cells by pressing X once your enemies are dead and then return to the control room to pull the lever.
|Mission 8: Rampart||100%|
| Follow O'Neal and you'll move through a room with the Alien Queen. Ignore the Queen for now because there's nothing you can do about her. O'Neal will then lead you to an outside area crawling with Xenos and Mercs.|
Go from cover to cover and kill all the Xenos and mercs as you see them. Grab any loot, as always, and keep pushing forward. You'll then go through an indoor facility-like area. You can shoot one of the enemies from behind in the back of the head as soon as you enter this room. Stay as far back as possible as you proceed so you can take out the other mercs, then continue following O'Neal and you'll wind up back outside.
Stay with O'Neal and keep pushing forward. Kill all the enemies you see as you progress. Finally, you will find the captured marine. Kill all the mercs that are guarding him, and then a cut-scene will play.
|Mission 9: Hope in Hadley's||100%|
| Follow O'Neal and Hicks down the street. They will walk in a sort of triangle formation as the Xenos come from both sides. Kill the Xenos and push forward to Hadley's Hope. Grab the turret and then return to the streets. Deploy it in the streets and then enter Hadley's Hope.|
You now have to find all the marines. Rush to HQ where you will find a few marines fighting Xenomorphs. Kill the Xenomorphs in each room. Bring out your motion tracker to help you locate all the marines. One marine will be trapped in a room with a Xenomorph and a locked door. Cut him out, eradicate any Xenomorphs, then resume your search.
The final marine will be trapped underneath a shelf. Help him by pressing X and then regroup with Cruz. Make your way to the vehicle bay and grab the turret. Set it up anywhere, and then make sure you're at full health and full ammo by using the ammo box in the small room here.
Go around the area and grab the smaller pieces of body armor. A full body armor is next to the ammo boxes, but don't waste it. A few waves of Xenos will drop into the area, so hold your ground and kill them all. If your body armor runs out, then go grab the full set of body armor next to the crates. There are a few health packs in this area as well in case your health gets low.
When these Xenos are dead, the next door will open. Go outside, and then a huge charger Xeno will appear. This thing is giant and has a large, armored head. Throw grenades at it and use a flamethrower if you have that as well. A bunch of smaller Xenos will be crawling around during this fight, but let your AI companions worry about them for now, as the huge one will only target you. Sprint away from it and put some distance in between you and the beast and shoot at its legs when you run out of grenades. When it dies, Cruz will open the next door.
Run over to the drop pod ship. Remove one of the three fuel lines by pressing X. Then Xenomorphs will come into the area. Thin them out a bit and look for body armor before removing the next fuel line. You don't want to be cornered next to a fuel line, so it's good to make sure that there aren't any Xenos in your area at least. Remove the third fuel line when ready, and then eliminate the remaining Xenomorphs.
|Mission 10: Derelict Reclaimed||100%|
| Follow your group into the tunnels. Grab the flamethrower on the crate, and then move deeper into the tunnels. There will be Xenomorph eggs all over the ground. The flamethrower proves very handy in destroying them. Spray the flames all over the place to get rid of the eggs and the Xenos that show up.|
Fight your way to the elevator. It will need power, so go up the stairs next to it. Before cutting away the gunk blocking the lever, turn around and kill the Xenomorph behind you. Then cut away the gunk and pull the lever. Return to the elevator and ride it up.
Your new goal is to destroy the three AA guns. There are mercs EVERYWHERE, as well as a few Xenos. Clear the area of mercs. There are huge caches of supplies dotted around the place. Use your HUD to find them to restock and heal yourself if needed. The AA gun will be in the center of the area. Ignore it for now and bring up your motion tracker to find an RPG.
Go to the RPG, which will be next to a disabled armored vehicle. Equip the RPG and fire three rockets into the AA gun to destroy it. Now continue to the next area, where the AA gun will be at the top of a tower. There will be more caches of supplies all over the place in case you need body armor or ammo. Fight your way through the mercs to get the next RPG, this time in a building with a bunch of other supplies. Grab it, and then destroy the second AA gun with it.
As you continue, you'll notice a valley with mercs huddled inside barricades. Fire grenades down there and take them out as best as possible, then run to the next RPG. It will be in a crate. Grab the RPG and then destroy the AA gun. Use the extra rocket to kill any remaining enemies. Then grab the legendary flamethrower and continue pushing forward.
You'll find a group of survivors. Save them by killing the Xenomorphs in the area. Then the Xenomorph Queen will show up. Run around and fire at her. Use the same strategy as you used with the charging Xenos from before. When enough damage has been done, the queen will burst through a door.
Follow the Queen through the door. Fight your way through the mercs and Xenos until you reach the ship. Then watch the scenes unfold.
|Mission 11: Home||100%|
| The final boss fight of the game is simple. What you need to do is pull the first manual release switch. Then run around the map in a circle, grabbing all the armor and such as you go, so that the Queen can't attack you. Then pull the second switch, which will be across from the first. Repeat the process with the last two switches.|
Then go behind the loader where a button is. Wait for the Queen to get close, and then press the button to launch her into space. If the Queen won't get close, shoot her to get her attention.
|Adaptive Morphology (30G)||100%|
| Upgrade every Appearance slot once for a Xenomorph class|
Gain XP, level up your Xenomorph, and then start adding new looks.
|Adios, Muchachos (20G)||100%|
| Gib two enemies at once|
"Gibbing" is when you blow up an enemy to the point that they are unrecognizable chunks of flesh all over the place. Now, to do this against two enemies at once, you'll either need to get in close with the shotgun and get lucky, or use explosive weapons. Late in the missions, you'll have a chance to get a rocket launcher to destroy AA guns. You get grenades as well that you can use.
|Anytime, Anywhere (20G)||100%|
| Kill a Crusher without it damaging you|
There is one time in the campaign where a Crusher shows up, but you can fight Crushers in the multiplayer mode multiple times. To avoid taking damage from them, run as far away from the Crusher as possible, then fire at its feet. As it gets close, run away from it again and repeat the process.
|Arbitrarily Exterminated (30G)||100%|
| Kill 2179 Xenomorphs|
Xenomorph kills count when playing in the campaign as well as playing in the multiplayer.
|Don't Count Me Out (5G)||100%|
| Revive a teammate|
Teammates that take too much damage get downed. You are more likely to get this one when playing campaign co-op. Just run over and revive your partners before they bleed out and die.
|Easter Egg (5G)||100%|
| Find the Easter Egg|
In Mission 2 of the campaign, there is literally an Easter egg amongst the alien eggs on the ground. Use the video from Rooster Teeth to help find it. See the video: Cheat Video
|Field Modified, Kill Certified (20G)||100%|
| Upgrade every slot for a weapon|
Level up and spend commendations on the weapons.
|Fire Drill (20G)||100%|
| Arm the emergency release and escape in under 2:30 on Sulaco Falls|
In the mission Sulaco Falls, arm the emergency release and then escape from the ship within 2:30. Put the game on easy and then just run by all the enemies.
|I Feel Safer Already (10G)||100%|
| Have another player join your party|
Get on Xbox Live and have someone join your party. You can also just have a friend join your party to accomplish this.
|I Heard THAT (25G)||100%|
| Collect all 12 Audio Logs|
There are 12 Audio Logs in the game. Use the video to help find all the different audio logs. See the video: Cheat Video
|I Like to Keep These Handy (30G)||100%|
| Collect all 6 Legendary Weapons|
There are 6 Legendary Weapons in the campaign. Use the video to help find all the different Legendary Weapons. See the video: Cheat Video
|I Love the Corps! (40G)||100%|
| Earn Rank 60 as a Marine|
Level up to Rank 60 as a Marine by gaining XP in the campaign and getting XP in the multiplayer.
|It's a Dry Heat (20G)||100%|
| Kill 3 enemies with a single U4 Firebomb|
The U4 Firebomb is the fire grenades in the game. Use them on human enemies (Xenomorphs move too weird to get this one), and then they will get on fire and catch other enemies in the area on fire as well.
|Lean and Mean (20G)||100%|
| Earn Rank 20 as a Marine|
Earn XP as a Marine by playing the campaign and multiplayer.
|Majority Shareholder (25G)||100%|
| Spend 30 Commendations|
Commendations are earned every time you level up. Get to level 30 and then you will have 30 Commendations to spend. Purchase upgrades 30 times and you'll be golden for this achievement.
|Mostly Come at Night... (20G)||100%|
| Find Newt's doll|
Newt's doll is like another Easter egg in the game. Check out the video to find its location. See the video: Cheat Video
|No Offense (20G)||100%|
| Melee a Lurker that is pouncing towards you|
When Xenos are jumping at you in the game, just mash on the right analog stick to use melee strikes.
|Not Bad For a Human (40G)||100%|
|Complete all Campaign levels on Hardened difficulty|
|Perfect Killing Machine (20G)||100%|
| Upgrade every Loadout slot for a Xenomorph class|
Rank up your Xenomorph in the multiplayer to earn commendations that you can then spend upgrading the Xeno's loadout.
|Remember the Fallen (30G)||100%|
| Collect all 35 Dog Tags|
There are 35 collectible Dog Tags in the campaign. The cheat video will show you how to find all the dog tags in Aliens: Colonial Marines. See the video: Cheat Video
|Short, Controlled Bursts (20G)||100%|
| Defeat all Xenomorphs in the Sulaco hangar bay without them crossing your barricade|
There is a section of the game where you have to defend yourself at the Sulaco hangar. Hold your ground. Put it on Easy and then kill all the Xenos before they can get close.
|State of the Badass Art (50G)||100%|
|Complete all Campaign levels on Ultimate Badass difficulty|
|Stay Frosty (20G)||100%|
| Compete an entire Challenge category|
There are three different Challenge categories in the game. You can check each one by pressing start at any time in the game. Each row is a different category. Keep completing the challenge in the same row until it is done.
|Structural Perfection (5G)||100%|
| Edit a Xenomorph loadout|
Customize the Xenomorph loadout in multiplayer. You have to level up a couple of times before you can do this so you actually have something to customize about the Xeno.
|You Look Just Like I Feel (30G)||100%|
|Upgrade every Appearance slot once for your Marine|
|Heavy Lifting (20G)||50%|
| Defeat the Raven in under 1:10 on Soldier difficulty or higher|
The Raven is a boss that you fight in the Powerloader. It will die faster on the easiest difficulty setting, so I recommend switching it to that difficulty. Mash on RT and LT to hit the Raven with melee attacks in the Powerloader.