Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 41987,165
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 41961,165
Unlimited weapons:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 44755,165