| Unlockable: | How to Unlock: |
| First Versus (10 points) | Defeat another player on Xbox Live in a versus match. |
| Fourth Boss (10 points) | Defeat the fourth boss. |
| Hard Win (35 points) | Complete the game without using a special attack. |
| High Score (25 points) | Score 800,000 points in one game with Game Settings set to Hardcore. |
| Kill Jet (30 points) | Defeat the Boss "Jet" at the end of Stage 2 with Game Settings set to Hardcore. |
| Knife Wielder (5 points) | Wield the knife in single player or co-op mode. |
| Online Co-op (10 points) | Complete an online co-op game. |
| Online Warrior (5 points) | Defeat 10 opponents on Xbox Live in versus mode. |
| Perfect Boss (10 points) | Defeat the first boss without dying. |
| Perfect Win (40 points) | Complete the game without continuing. |
| Pipe Wielder (5 points) | Wield the pipe in single-player or co-op mode. |
| Psycho (15 points) | Kill 10 enemies without losing your weapon. |
