Here are the PS3 Trophies you can earn while playing Killzone 3

Platinum Trophy (Platinum)
Collect All Killzone 3 Trophies

Ready for Battle (Bronze)
Completed weapons training in prologue

In Your Face (Bronze)
First Brutal Melee

No Witnesses (Bronze)
Destroy All Dropships on the Highway

Mopping Up (Bronze)
Kill 40 or more Helghast foot soldiers on the Beach.

Sawn Off (Bronze)
Destroy All chasing SawBlade APCs in Senlin Beach section

Smoking Wrecks (Bronze)
Destroy all the Helghast Tanks in the Senlin Beach Section

Turn the Tables (Bronze)
Melee Kill a Capture Trooper

Spiky Personality (Bronze)
Kill a Helghast using a Burster

Minigunned (Bronze)
Destory everything while using a minigun on the Intruder.

Quick Exit (Bronze)
Escape the oil rig quickly

Shattered (Bronze)
Destroy all the glass in the Labs

Pinpoint (Bronze)
Kill the Heavy with an StA-14

Evening the Odds (Bronze)
Kill 500 Helghast

Cagefighter (Bronze)
Kill 10 Helghast with Brutal Melee

Frag Out (Bronze)
Kill 3 Helghast with 1 fragmentation grenade

One Each (Bronze)
Shot and killed 3 Helghast using the shotgun pistol without reloading or switching weapons

Eagle Eye (Bronze)
Shot and killed 6 Helghast using the Sniper Rifle without reloading or switching weapons

Power Spike (Bronze)
Used the Boltgunn to nail and Helghast to an exploding object

Up Close and Personal (Bronze)
Use Brutal Melee move against another player

Team Player (Bronze)
Joined and completed a match as a part of a squad

Medic! (Bronze)
Revived a friendly player for the first time

Handy Man (Bronze)
Repaired an object for the first time

Now You See Me (Bronze)
Killed another player while cloaked

Spy Game (Bronze)
Killed another player while disguised

Turf War (Bronze)
Capture a Tactical Spawn Point for the first time

Time For A Dip (Bronze)
Reached the Corinth River with the convoy

Save The Intruders (Bronze)
Successfully assisted with defeating the Arc APCs

Never There (Bronze)
Sneaked past all Helghast in the Jungle without alerting any of them

ISA TV (Bronze)
Made contact with Earth

Aerial Superiority (Bronze)
Killed 5 Helghast while airborne using the Jetpack

Into The Lair (Bronze)
Reached the cable car and gained access to Stahl Arms South

Jail Break (Bronze)
Liberated Narville from Stahl Arms South

Go Down And Stay Down (Bronze)
Defeated the ATAC outside the Stahl Arms facility

Iced (Bronze)
Destroyed all 4 Helghast Ice-Saws and all 6 Dropships

You Drive (Bronze)
Took over the controls of the Mobile Factory

Bring It Down (Bronze)
Defeated the MAWLR defending the Space Elevator

Completist (Bronze)
Destroyed every destructible weapon on the MAWLR while on foot and on the Intruder

Frazzle Dazzle (Bronze)
Used the StA5X Arc Cannon to kill 3 Helghast with one shot

Excessive Force (Bronze)
Used the secondary fire function of the WASP launcher to kill a single Helghast

Spread The Love (Bronze)
Killed 5 Helghast at once using the secondary fire mode of the WASP launcher

Double Trouble (Bronze)
Made it to the Corinth River in Co-op mode

Stranded Together (Bronze)
Made it to the Extraction Point in Co-op mode

Iron Man (Bronze)
Killed a player using the Exo in any multiplayer mode

Now it’s Personal (Silver)
Kill 1,000 Helghast

Fight to the Last (Silver)
Kill 1,500 Helghast

Closed Quarters Killer (Silver)
Kill 25 Helghast with Brutal Melee

Hand to Hand Master (Silver)
Kill 50 Helghast with Brutal Melee

Victory (Gold)
Completed the Campaign on Elite Difficulty

Grand Slam (Gold)
Won a match in Operation, Warzone & Guerilla Warfare modes

Let’s Go Home (Gold)
Destroyed Stahl’s Cruiser and left the planet on any difficulty