Head The Ball

Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 40270,0

Unlimited time:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 39044,165

Unlimited weapons:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 37872,0