Unlimited lives:
Press Up, Down, Left, Right on Joystick one at the title screen. The phrase "Press Fire To Cheat" will be displayed at the bottom of the screen to confirm correct code entry. Press Fire on Joystick two to enable cheat mode with unlimited lives.
Unlimited energy:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 61895,173
Unlimited time:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 62052,173
POKE 62055,173
Unlimited ammunition:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 61754,173