| Unlockable: | How to Unlock: |
| Armory (10 points) | Collect gout different weapon power-ups. |
| Bulletproof (25 points) | Complete the game in Arcade mode using only 1 credit. |
| Full Assault (30 points) | Complete the game in under twelve minutes. |
| Infiltration (15 points) | Destroy the alien tower at the end of the water level. |
| Partnership (20 points) | Complete the game in Xbox Live Co-op mode. |
| Proficient (20 points) | Complete the second tunnel with a score of 100,000 or more in Arcade mode. |
| Team Work (10 points) | Score 100,000 points in an Xbox Live Co-op game. |
| Tough Guy (20 points) | Get to the second tunnel without obtaining a single weapon upgrade. |
| Tunnel runner 1 (10 points) | Beat the first timed tunnel with 33 seconds or more left. |
| Tunnel runner 2 (15 points) | Beat the second timed tunnel with 55 seconds or more left. |
| Untouchable (10 points) | Get to the first tunnel without losing a life. |
| Well Equipped (15 points) | Collect three different weapons in the second tunnel. |
