Achievements:
Team Veteran (Bronze)
Objective: Complete 'Hydroponics' in Co-op Assault.
Tooling Up (Bronze)
Objective: Purchase an upgrade (or witness another player doing this).
Saving the Day (Bronze)
Objective: In single player Story mode, save the game using the Intex Terminal.
Campaign Veteran (Silver)
Objective: Complete all single player levels 1-5.
Fighting Light (Silver)
Objective: Finish any single player level without using an item.
Ain't Got Time to Bleed! (Silver)
Objective: Finish 'Interface' single player level without using health packs.
Hard to Kill (Silver)
Objective: Finish a multiplayer level with no player losing a life.
Knowledge is Power (Silver)
Objective: Collect all logs through out the game.
No Stone Unturned (Silver)
Objective: Find all 'secret' collectibles.
Elite Force (Silver)
Objective: Without the player taking damage kill 50 aliens in single player.
Break a Few Eggs (Silver)
Objective: In single player Story mode, destroy 50 alien eggs using melee.
Pure Pawn (Silver)
Objective: In single player Story mode, sell 10000 credits worth of items or ammunition.
Deadly (Silver)
Objective: Kill 5 aliens with one shot (or witness another player doing this).
Shocking (Silver)
Objective: Stun 5 aliens with one stun grenade (or witness another player doing this).
Against the Odds (Gold)
Objective: Complete all single player levels 1-5 on elite difficulty.
Break Out the Arsenal (Gold)
Objective: Fire every weapon and use every item in single player.
Cash is King (Gold)
Objective: Achieve a balance of 30000 credits or more.
Massacre (Gold)
Objective: Kill 10 aliens with one shot (or witness another player doing this).
Electrifying (Gold)
Objective: Stun 10 aliens with one stun grenade (or witness another player doing this).
The Completionist (Platinum)
Objective: Each and every trophy has been awarded. Congratulations!