Nightmare Creatures
Go to the main menu and type the cheats. After typing press ENTER. Always typ the codes with capitals. Then start with LEVEL_ID...
EVERYWHERE
All levels
BOULON
Ammo and health
CHICO
Less monsters
94
Chop mode
BRONKO
Be a monster
BLUR
Special effect
DAVID
Combos off
BES
Energy display off
MOBY
Choose soundtrack