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

POKE 5635,234
POKE 5636,234
POKE 5637,234
SYS 7360 
Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 5663,234
POKE 5664,234
POKE 5665,234
SYS 7360 
Unlimited lives (first part):
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 42339,173 
Unlimited lives (part two):
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 43700,173 
Unlimited lives (part three):
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 42757,173 
Unlimited ammunition (part one):
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 19139,189 
Unlimited ammunition (part two):
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 19061,189 
Unlimited ammunition (part three):
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 39698,189 

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Level Password  
2 RAEQWEH2  
3 ABVLREYS