All cheats have to be entered as a code.

LRGARMS      : Invincibility
PASSKEY      : Level select
QUITER       : Level skip
NINJA        : All combos
STRAPPED     : All weapons
MRJUAREZ     : Maximum ammunition
SPINACH      : Maximum damage
BUTTERUP     : Extra health
STEELUP      : Armor
SLUGGER      : Baseball bat
CLUMSY       : Rag doll
SLIZOMIZO    : Slow motion button
BOUNZMEN     : Bouncy men
CLUTZ        : Cluttered locations
STYLIN       : Dramatic finish
WIMP         : Ending sequence
SKETCHPAD    : Concept art
DIRECTOR     : All FMV sequences
FPSSTYLE     : Free aim
MAXIMUMHURT  : Pain arenas
DONOTSEL     : Do not select
SCARYCLOWN   : Play as Clown
JAILBREAK    : Play as Convict
GNRLINFANTRY : Play as GI
HISSSS       : Play as Lizard
BIGLIPS      : Play as Moseley
WEIGHTGAIN   : Play as Nara
HAIRLOSS     : Play as Nikki
MRROBOTO     : Play as Robot
SUPERJOHN    : Play as Superhero
IAMSODEAD    : Play as Zombie