Instructions
Use the thumb stick on the PlayStation 3 (PS3) or Xbox 360 controller to highlight the teleporter and press "Square" on the PS3 controller or "A" on the Xbox 360 controller to enter the menu.
Use the thumb stick again to highlight "Rock Marathon Challenge" and press "A" or "Square" to initiate the challenge.
Play all 15 songs in the set list and earn a passing score. Restart the challenge if you fail a song.
Enter the teleporter menu after you've complete the challenge to find the Endless Set List Challenge.