Unlimited lives:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 32133,65
SYS 32768 
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 38680,96 
Turbo mode:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 36994,173