| Unlockable: | How to Unlock: |
| Challenge x15 (10) | Defeat 15 opponents in Challenge Mode |
| Challenge x50 (20) | Defeat 50 opponents in Challenge Mode |
| Combo x2 (15) | Kill 2 opponents in rapid succession |
| Combo x5 (20) | Kill 5 opponents in rapid succession |
| Complete Mission Mode (20) | Awarded for completing Mission Mode |
| Completed Training (10) | Complete the Single Player training mode with any character |
| Marksmanship (25) | Score over 10,000 in the 'Shooting Range' |
| Played 100 Matches (25) | Play 100 matches either offline or on Xbox LIVE |
| Six Degrees of Small Arms (0) | Play online to 'catch' this elusive Achievement |
| Won 10 Matches (10) | Win 10 matches in Single Player or by playing on Xbox Live |
| Won 100 Matches (25) | Win 100 matches in Mission Mode or Battle Mode |
| Won 50 Matches (15) | Win 50 matches in Single Player or by playing on Xbox Live |
