Level select:
Hold [Alt] [Ctrl] at the main menu to display the level selection screen.
Suicide missions:
Hold [Alt] M at the main menu.
Cheat Codes:
Hold [Ctrl] and type one of the following codes during game play to activate the corresponding cheat:
CHEAT FUNCTION – CHEAT CODE
170 degree field view – vomit
All access cards – axes
All grenades – horse
All squad members have all weapons – thrill
All weapons, ammo, and full heath – aslag
Alternate field view – phish
Area extraction zone – ext
Berserk squad members – hdcs
Enemy (green) and items (white) on map – godeye
Flame-thrower – tozt
Freezes opponents – klatu
Full armor – arm
Full health for squad members – phnx
Full heath – hell
Full oxygen – oxy
God mode – atheist
Infrared vision – acid
Kill squad member 1 – ksa
Kill squad member 2 – ksb
Kill squad member 3 – ksc
Kill squad member 4 – ksd
Locations displayed on map – blue
M-16 and ammo – xse
Mission objectives complete – qed
Mission skip – soia
MP5N machine gun and ammo – vent
Rocket gun and ammo – deth
Squad member revolt – nimrod
Squad members have full heath – medic
Squad members talk – chat
Super jump – asd
Two pistols and ammo – woo
Two shot guns and ammo – freedom