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

POKE 14888,173 
Unlimited grenades:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 19447,173 
Unlimited bombs:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 15834,173 
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 12378,173