Super Hard Difficulty Beat the game with 141 Emblems and all A ratings.
Metal Skin Hold A and Y after selecting a 2-player level to receive a "metallic" skin covering your team.
CG Threatres Team Chaotix Cinema: Complete Team Chaotix in Story Mode Team Dark Cinema: Complete Team Dark in Story Mode Team Rose Cinema: Complete Team Rose in Story Mode Team Sonic Cinema: Complete Team Sonic in Story Mode
Last Story Collect all 7 Chaos Emeralds and finish all stories to unlock the last story.
To get metal skins for any character go on any two player modes and pick your team and straight after you pick your team hold A+Y until the battle starts and your characters will be in their metal skin.