Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 13270,173
Unlimited shots:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 14022,173
Invincibility:
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 13603,169
POKE 13604,0
POKE 13605,234
POKE 13606,234
POKE 13607,131