Cheat mode:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 3439,165
POKE 18066,0
SYS 3294 
Cheat mode (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 3439,165
POKE 3592,234
POKE 18066,0
SYS 3294 
Level passwords: 

MAYHEM
TRANSMOGRIFY
PEDALS OF DOOM