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.
