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.