Here is the full list of all 35 Alien Breed Episode 3: Descent trophies - there are 16 bronze, 14 silver, 4 gold and 1 platinum.
Each and every trophy has been awarded. Congratulations!
Complete all single player levels 1-5 on elite difficulty.
Complete any co-op assault map over PlayStation®Network.
Complete the prologue, all single player, co-op assault and survivor maps on any difficulty.
Complete 'Vengeance' single player level on Veteran mode in 17 minutes or less.
Finish any level with five Sentry guns in your inventory.
Complete all single player levels 1-5.
Destroy the alien queen.
Stay alive for 8 minutes or better on any of the Survivor mode single player levels.
Find all 'secret' collectibles.
Collect all logs through out the game.
Locate the bodies of Vance and Barnes.
Kill 5 aliens with one shot of Project X (in single player).
Kill 1000 aliens in single player.
Access the map screen (in single player).
Take 500 damage without dying on 'Determination' single player mission.
Kill 3 burster aliens with one melee attack (in single player).
Use a Stun Grenade to stun 5 aliens at the same time (in single player).
Collect 50 items or weapons from human corpses (in single player).
Kill Mia.
Complete any single player level with the waypoints turned off.
Purchase any item upgrade (in single player).
Kill a sentry gun with the Blaster.
Smash 10 windows (in single player).
Use a Frag Grenade to kill 5 aliens at the same time (in single player).
Purchase any weapon upgrade (in single player).
Kill a stunned alien with a Frag Grenade (in single player).
Kill 20 aliens with one sentry gun.
Kill an alien egg using the melee attack (in single player).
Complete any multiplayer level.
Kill 250 aliens on any of the Survivor mode multi player levels.
Achieve a time of 8 minutes or better on any multiplayer survivor map.
Complete any single player level using only the Blaster and Grenades.
Complete the prologue in single player on any difficulty level.
Sell any item (in single player).