After the cut scene don’t wait around, make a break for the way point!

Jump down and stick to the left and keep moving! When you get close to the way point a new one will appear farther down the road, the first way point was to a laser. DO NOT TOUCH THE LASER! Wait for it to stop firing the jump across it. There will be hostiles at all the lasers so be prepared. When you reach the lasers you don’t need to rush, take your time. When you past the second laser there will be a guy on the upper right side of you, hes got a rocket launcher, I would take him out if I were you. The next laser after the second one dose not shut off it moves back a fourth, so time your jump. After the third laser you will reach your way point.

When you have reached your second way point run across the ice bridge ,and there is a supply depot on the other sides, and more lasers! After the supply depot (if you used it) start moving toward your next way point. There will be numerous enemies and lasers that are moving so be careful. Once you have made it up a hill with about 3 lasers on it start following the way points through the cavern like environment.

Now that you have made it through the cavern you will find a bunch of enemies firing at a drop ship, kill them before they destroy it. Having saved the ship, turn around and start moving toward your next way point. You will first encounter a drilling platform crawling with enemies and turrets, be sure to take out some of the enemies and the turrets before moving up. The easiest way to get to your way point is to follow the red flares on the ground. Behind the drilling platform is a supply depot. Follow the red flares up the hill, hug the left wall, and into another cave. Run through the cave until you see your way point across a giant canyon with a bridge going across it. Before you can reach the bridge it will be destroyed, do NOT try to jump the the canyon. Across the canyon are some bad guys, try to kill them, you can change your weapons if you have to with a supply depot to the left of the bridge. Also on your left is a path with a bunch of flares on it, hug the wall and follow the flares.

Eventually you will make it across the canyon and on the other side of the destroyed bridge. Move forward into the another cave and fight your way through it. At the end of the cave you will find yourself at another drill site, this one much larger than the first one. Clear out the drill site and get yourself to the way point. At the way point a supply depot will be dropped, and all you have to do is hold out for awhile. After the cut scene of Blackburn going down move on to your next way point. The way points will eventually lead you to the crash site.

After the cut scene defeat the enemies that just dropped in, the start making your way toward the AA gun. To get to the AA gun there will be an ice bridge marked with red flares on both the start and end. Across the ice bridge you can either attempt to jet pack over the wall protecting the AA gun or go around the left corner and walk up the stairs. After you have cleared the area and planted the explosives, start running back toward the crash site by going back over the bridge, overdrive and ready your  jet pack because as your about to make it across the bridge a jet will swoop in and destroy it. Once over the bridge make it to the way point to finish the mission, you do not need to kill any enemies attacking the drop ship, but a little bloodshed never hurt anybody eh?