Enter the following cheats during the game:

FIREHURLER       - Missile launcher and fuel cannisters.
FLAMENSTEIN      - Flame thrower and fuel canisters.
IAMSOLAME        - God mode.
LOBITFAR         - 10 grenades and Molotov cocktails.
SHELLFEST        - Shotgun, spray cannon and 50 shells.
SHOTGUN          - Shotgun and 50 shells.
STERNOMAT        - Grenade gun and ammo.
THEBESTGUN       - Chain shotgun and ammo.
TITANIII         - Missile launcher and missiles.
HEALTHFUL        - Full health
THICKSKIN        - Full armor
CARRYMORE        - Double ammo capacity
GIMMEDAT         - Get everything
HESSTILLGOOD     - Resurrection (when dead)
DAWHOLEENCHILADA - Grenades, Missiles, Napalm, Flamer
BREAKYOSAK       - Shotgun ammo
MYTEAMOUSE       - Makes Chars Smaller
EXPLODARAMA      - Grenades, Missiles, Heatseekers
CROTCHBOMB       - Mines
THERESNOPLACELIKEOZ - Skip level