Shellshock

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