At the Main menu type:

Lacrimosa 	- Level select
Karma 		- Karma is a playable charater
Sophia 		- Sophia is a playable Character

During play, pause the game and enter:

cachou 		- Max everything
boz 		- Full mana
xul		- Full life
alex 		- 50 lives
jbb		- Full weapon capacity
mumu		- Max experience
rik		- All spells

No collision detection:

Hold Ctrl+C+Z and move around without collision detection.

Thanks to Revolution readers Rafael R. Pancho and Porko Mcnasty!