Bonus boards:
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Successfully complete the indicated task to unlock the corresponding
board:
Chaos Emerald Board: Get an „S” rank on all Story missions.
Professional Board: Successfully complete all Trial missions.
Avatar Awards:
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Successfully complete the indicated task to unlock the corresponding
Avatar Award:
E-10000 G t-shirt: Place first on every course with E-10000 G.
Jet t-shirt: Place first on every course with Jet.
Sonic Free Riders t-shirt: Watch the credits in their entirety.
Sonic t-shirt: Place first on every course with Sonic.