Bronze At Your MercyKill a stunned alien with a Frag Grenade.
Bronze Bigger is BetterPurchase any weapon upgrade.
Bronze Bigger Isn't Always Better?Kill a sentry gun with the Blaster.
Bronze Exploding FistKill 3 burster aliens with one melee attack.
Bronze Into the Kill ZoneKill 20 aliens with one sentry gun.
Bronze K.I.A.Locate the bodies of Vance and Barnes.
Bronze NetworkingComplete any co-op assault map over PlayStation Network.
Bronze Recon UnitComplete any single player level with the waypoints turned off.
Bronze Seasoned SquaddieComplete any multiplayer level.
Bronze The InitiatedComplete the prologue on any difficulty level.
Bronze Version 2.0Purchase an item upgrade.
Silver Battle-hardenedComplete all single player levels 1-5.
Silver Frag-masterUse a Frag Grenade to kill 10 aliens at the same time.
Silver Hidden TreasureFind all 'secret' collectibles.
Silver ImmobilisedUse a stun grenade to stun 10 aliens at the same time.
Silver Light 'em up!Kill 5 aliens with one shot of Project X.
Silver Meat GrinderKill 250 aliens on any of the Survivor mode multi player levels.
Silver SurvivorStay alive for 8 minutes or better on any of the Survivor mode single player levels.
Silver SurvivorsAchieve a time of 8 minutes or better on any multiplayer survivor map.
Silver TankTake 200 damage without dying on 'Determination' single player mission.
Silver The InformedCollect all logs through out the game.
Gold Can't Get EnoughComplete the prologue, all single player, co-op assault and survivor maps.
Gold Elite UnitComplete all single player levels 1-5 on elite difficulty.
Gold HardcoreComplete any single player level using only the Blaster and Grenades.
Gold More Speed, Less HasteComplete 'Vengeance' single player level on Veteran mode in 17 minutes or less.
Platinum The CompletionistEach and every trophy has been awarded. Congratulations!