Press P to pause the game, then type fortytwo. This is Easy Mode, which enables other codes and cheats.
The following codes should be entered when the game is paused. They're case-sensitive.
normalNormal character much betterArkan takes a leak (Really!!!) bigfootBig feet bigheadBig Head baffeBig Hands dwarfSmall character Ctrl-DFills up Arkan's life gauge DDecreases the opponent's life to 1
Thanks to Revolution reader Ershadza!