Load the game with the "sof.exe +set console 1" command line. Then while playing a game, press ~ to display the console and type "\cheats 1" to enable cheat mode. The following codes may now be enter at the console to activate the corresponding cheat function:

RESULT	CHEAT CODE
God mode	heretic
Invisible to enemies	ninja
First six weapons with full ammo	elbow
Last six weapons with full ammo	bigelbow
No clipping mode	phantom
Slow-motion mode	matrix [1-10]
Spawn indicated object	gimme [item name]