Cheat mode:
Type HHDSFHHH at the high score screen. The screen will flash to confirm correct code entry.
Start at level 2:
Enter CHEAT at the high score screen.
Cheat mode (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 15502,96
POKE 15507,255
SYS 24576