Various cheats
Type these codes:

Cheat code:             Effect:         
mpkfa                   god mode
mppos                   global position
mpfps                   frames per second
mpbodyguard             player takes zero damage
mphighlander            gives 99 lives
mpthewolf               goto next level
mpbadmofo               goto previous level
mpbringthegimp          goto next boss level
mpignition              gives keys
mpturbocharger          gives scrolls-my favorite;)
mppetrol                gives health
mparmorall              gives armor
mpglovebox              gives weapons
mpshoes                 gives 99 souls
mpironpockets           thief can't steal from you
mpbandaid               health stops fading away
mplockpick              Gives the skull key
mpomar                  Gives the fire shield artifact
mptroadrunner           Gives speed boost artifact
mpwinturbo              Gives super scroll artifact
mpbadbreath             Gives Freak artifact
mpmintybeath            Gives Worship artifact