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.
normal Normal character
much better Arkan takes a leak (Really!!!)
bigfoot Big feet
bighead Big Head
baffe Big Hands
dwarf Small character
Ctrl-D Fills up Arkan's life gauge
D Decreases the opponent's life to 1
Thanks to Revolution reader Ershadza!