While playing the game, type.

Effect	Code
All skeleton keys	skel
All weapons	rambo
Chicken mode	Cockadoodledoo
God mode	quicken
Instant Tome of Power	shazam
Inventory cheat	Gimme( Enter Item a-1)(Enter # 1-9)
Kills all enemies on the level	massacre
Walk through walls	kitty
Warp to specified level (the #s of the engage code resemble numbers, e.g. if you want to warp to the fifth level of episode 3, type "engage35")	engage##