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: Complete the individual main stories for all 6 playable characters (Sonic, Tails, Knuckles, Amy, Big, and E-102 Gamma). A gold question mark will appear on the character select screen.
While not a programmed cheat code, this legendary glitch lets you maximize your Chao's stats without the animal disappearing:
You can unlock specific customization gear for your Xbox Live Avatar simply by playing the game: Sonic's Hi-Speed Shoes : Play the game for a total of . Sonic's "1991" T-Shirt : Play the game for a total of 5 hours .
: Collect all 130 Emblems throughout the game. (Requires the "DX" Director's Cut DLC on Xbox 360).
