Various Cheats
During gameplay, press /, then enter any of the following "Codes":

STAGEWIN = Complete the Current Stage
CLOAK = Turns Clocking On/Off
REGENWEAP = Regenerates Weaponery
REGENDAM = Regenerates Health
REGENALL = Regenerates Everything
IRONMAN = Invincibility
IRANGE = Unlimited Rnage of Firing
EYE = Changes View Angle