Unlockable - Cheats, new modes and bonus missions | |
| 3 bonus missions | Beat 1st 15 missions on any difficulty except Initiate. |
| Cheat menu (unlimited health and ammo, mission select) | Beat 1st 15 missions on Graduate. Go to "Start Game" to activate cheat menu and play any mission with cheats. |
| Veteran difficulty | Beat 1st 15 missions on Graduate. Go to "Start Game" and past the cheat menu it will ask for your difficulty level. Pick Veteran to start playing. |
