Various cheats
     While playing press / and then type:

Cheat code:             Effect:
STAGEWIN                to complete the current stage
CLOAK                   tuns cloking on/off
REGENWEAP               regenerates weaponry
REGENDAM                regenerates health
REGENALL                regenerates everything
IRONMAN                 invincibility
IRANGE                  unlimited range of firing
EYE                     changes view angle