There are 51 Trophies that can be collected.

Bronze

Ready for Battle
Completed weapons training in prologue

In Your Face
First Brutal Melee

No Witnesses
Destroy All Dropships on the Highway

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

Sawn Off
Destroy All chasing SawBlade APCs in Senlin Beach section

Smoking Wrecks
Destroy all the Helghast Tanks in the Senlin Beach Section

Turn the Tables
Melee Kill a Capture Trooper

Spiky Personality
Kill a Helghast using a Burster

Minigunned
Destory everything while using a minigun on the Intruder.

Quick Exit
Escape the oil rig quickly

Shattered
Destroy all the glass in the Labs

Pinpoint
Kill the Heavy with an StA-14

Evening the Odds
Kill 500 Helghast

Cagefighter
Kill 10 Helghast with Brutal Melee

Frag Out
Kill 3 Helghast with 1 fragmentation grenade

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

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

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

Up Close and Personal
Use Brutal Melee move against another player

Team Player
Joined and completed a match as a part of a squad

Medic!
Revived a friendly player for the first time

Handy Man
Repaired an object for the first time

Now You See Me
Killed another player while cloaked

Spy Game
Killed another player while disguised

Turf War
Capture a Tactical Spawn Point for the first time

Silver

Now it’s Personal
Kill 1,000 Helghast

Fight to the Last
Kill 1,500 Helghast

Closed Quarters Killer
Kill 25 Helghast with Brutal Melee

Hand to Hand Master
Kill 50 Helghast with Brutal Melee

Gold

Victory
Completed the Campaign on Elite Difficulty

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

Platinum

Platinum Trophy
Collect All Killzone 3 Trophies

19 Secret

Bronze

Time For A Dip
Reached the Corinth River with the convoy

Save The Intruders
Successfully assisted with defeating the Arc APCs

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

ISA TV
Made contact with Earth

Aerial Superiority
Killed 5 Helghast while airborne using the Jetpack

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

Jail Break
Liberated Narville from Stahl Arms South

Go Down And Stay Down
Defeated the ATAC outside the Stahl Arms facility

Iced
Destroyed all 4 Helghast Ice-Saws and all 6 Dropships

You Drive
Took over the controls of the Mobile Factory

Bring It Down
Defeated the MAWLR defending the Space Elevator

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

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

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

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

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

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

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

Gold

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

http://www.ps3trophies.com/for…..-list.html