Complete Act 2 of the story.

You must impress the required amount of bystanders in Snowbird.

You must complete Act 1 of the story.

You must complete Act 3 of the story.

You must finish the story mode.

You must impress the required amount of bystanders in Northstar.

You must get a medal on every challenge.

You must impress the required amount of bystanders in Laax

You must impress the required amount of bystanders in DC.

You must get a gold medal on ever challenge

You must get a 1,000,000 point combo.

At the Main Menu, go to the Options menu. Then go to Cheat Codes. Enter RIGHT TRIGGER, X, LEFT TRIGGER, DOWN, RIGHT, LEFT BUMPER, LEFT TRIGGER, RIGHT TRIGGER, Y, X.