Sonic the Hedgehog Cheats - PlayStation 3
Get these people like this:
Amy Rose - All "S" Ranks on Soleanna mystery missions.
Blaze the Cat - Pass all Soleanna mystery missions.
E-123 Omega - All "S" Ranks on GUN Commander missions.
Knuckles the Echidna - All "S" Ranks on Town Stage missions.
Miles "Tails" Prower - Pass all Town Stage missions.
Rouge the Bat - Pass all GUN Commander missions.
To Unlock the Last Episode, beat Sonic's Episode, Silver's Episode, and Shadow's Episode.
Clear all levels, boss and town missions with S rank.
Unlock "Extras" Menu
Complete either Sonic, Shadow, or Silver's story 100% to unlock the Extras menu on the main menu.
Meet certain requirements in Sonic's story to unlock Shadow and Silver's stories:
Shadow the Hedgehog - Complete 'Crisis City' with Sonic
Silver the Hedgehog - Complete 'Silver the Hedgehog' boss battle with Sonic