Unlimited lives:
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 6418,234
POKE 6419,234
POKE 6420,234
POKE 6444,234
POKE 6445,234
POKE 6476,234
POKE 6477,234
POKE 6478,234
SYS 11924