Achievements
| Unlockable | How to Unlock |
|---|---|
| Against the Odds (25) | Complete single player levels 1-5 on Elite difficulty |
| Ain't got time to bleed! (20) | Complete 'Interface' single player mission without using a health pack |
| Born to Kill (10) | Kill a total of 25 aliens in single player |
| Break Out the Arsenal (10) | Fire every weapon and use every item in single player |
| Campaign Veteran (25) | Complete all single player levels 1-5 |
| Elite Force (10) | Kill 50 aliens in a row without taking damage in single player |
| Fighting Light (20) | Complete any single player level without using any items |
| Hard to Kill (20) | Complete CO-OP Assault level 1, 2 or 3 without either player dying |
| Killing Spree (10) | Kill 20 aliens within 30 seconds in single player |
| Knowledge is Power (20) | Collect all the logs throughout the game |
| No Stone Unturned (10) | Find all secret collectibles |
| Team Veteran (20) | Complete "Hydroponics" in Co-op Assault |
