Complete the following tasks to unlock PlayStation 3 trophy rewards.

Trophy	How to unlock
Exterminator (Silver)	Kill 1000 aliens in single player.
Grave Robber (Bronze)	Collect 50 items or weapons from human corpses.
Hard Up? (Bronze)	Sell any item.
Idle Sentries (Silver)	Finish any level with five Sentry guns in your inventory.
Lost? (Bronze)	Access the map screen.
Regicide (Silver)	Destroy the alien queen.
Shattered (Bronze)	Smash 10 windows.
Sunny Side Up? (Bronze)	Kill an alien egg using the melee attack.
Systems Crash (Silver)	Kill Mia.