Level select 
Enter "PASSKEY" as a code.

Level skip 
Enter "QUITER" as a code.

Invincibility 
Enter "LRGARMS" as a code.

All combos 
Enter "NINJA" as a code.

All weapons 
Enter "STRAPPED" as a code.

Maximum ammunition 
Enter "MRJUAREZ" as a code.

Maximum damage 
Enter "SPINACH" as a code.

Extra health 
Enter "BUTTERUP" as a code.

Play as Clown 
Enter "SCARYCLOWN" as a code.

Play as Convict 
Enter "JAILBREAK" as a code.

Play as GI 
Enter "GNRLINFANTRY" as a code.

Play as Lizard 
Enter "HISSSS" as a code.

Play as Moseley 
Enter "BIGLIPS" as a code.

Play as Nara 
Enter "WEIGHTGAIN" as a code.

Play as Nikki 
Enter "HAIRLOSS" as a code.

Play as Robot 
Enter "MRROBOTO" as a code.

Play as Superhero 
Enter "SUPERJOHN" as a code.

Play as Zombie 
Enter "IAMSODEAD" as a code.

Free aim 
Enter "FPSSTYLE" as a code.

Pain arenas 
Enter "MAXIMUMHURT" as a code.

Armor 
Enter "STEELUP" as a code.

Baseball bat 
Enter "SLUGGER" as a code.

Rag doll 
Enter "CLUMSY" as a code.

Slow-motion button 
Enter "SLIZOMIZO" as a code.

Bouncy men 
Enter "BOUNZMEN" as a code.

Cluttered locations 
Enter "CLUTZ" as a code.

Dramatic finish 
Enter "STYLIN" as a code.

Ending sequence 
Enter "WIMP" as a code.

Concept art 
Enter "SKETCHPAD" as a code.

All FMV sequences 
Enter "DIRECTOR" as a code.

Do not select 
Enter "DONOTSEL" as a code.