Cheat mode:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 5714,173
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 5643,255
Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 41624,165