Sonic the Hedgehog

Unlockable How to Unlock
Audio Room Complete Sonic, Shadow, or Silver's story 100%
Theater Room Complete Sonic, Shadow, or Silver's story 100%
Last Episode Beat Sonic's Episode, Shadow's Episode, and Silver's Episode
Shadow the Hedgehog Complete 'Crisis City' with Sonic
Silver the Hedgehog Complete 'Silver the Hedgehog' boss battle with Sonic
Elise's theme Defeat Solaris