Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 44355,0
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 44258,96
Unlimited weapons:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 51104,0