Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 38895,165
SYS 34050 
Cheat mode:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 46254,165
POKE 34380,169
POKE 39422,0
POKE 34381,0
SYS 34050 
Invincibility:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 34394,234
POKE 34395,234
POKE 34396,234
SYS 34050