Without taking damage kill 50 aliens in single player.
Kill 1000 aliens in single player.
Deal 200 damage to one alien.
Each and every trophy has been awarded. Congratulations!
Complete all single player levels 1-5 on elite difficulty.
Complete all single player levels 1-5.
Complete any multiplayer level.
Finish 'Primed' single player level with 300000 or more overall score.
Finish multiplayer 'Cargo' level without taking any damage.
Collect all logs through out the game.
Stay alive for 8 minutes on any of the Survivor mode single player levels.
Complete 'Cargo' multiplayer level in 10 minutes or less.
Find all 'secret' collectibles.
Buy every upgrade.
Purchase the Health Kit Upgrade.
In a multiplayer game, reach the end of a level without dying or firing a shot.
In single player story mode, melee one of each type of alien.
In single player story mode, purchase 5 Hardened Armor items from the Intex Vendor.
In single player, use a sentry gun to kill 20 aliens.
Kill a stunned alien with a Frag Grenade.
Kill a sentry gun with one rocket.
Complete a single player level with Waypoint Display turned off.
Complete Story Mode on elite difficulty with a total time played of 4 hours or less.
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