Guitar Hero - Metallica
Cheat mode:
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At the main menu, select "Options", "Cheats", "Enter New Cheat", then
enter one of the following codes to unlock the corresponding cheat
option. If you entered the code correctly, a message will appear.
Metallica Costumes - Press Green, Red, Yellow, Blue(2), Yellow, Red, Green.
Hyperguitar, Hyperbass, and Hyperdrums - Press Green, Blue, Red, Yellow(2), Red, Green(2).
Performance mode - Press Yellow(2), Blue, Red, Blue, Green.
Invisible Rocker - Press Green, Red, Yellow(3), Blue(2), Green.
Air instruments - Press Red(2), Blue, Yellow, Green(3), Yellow.