Complete each of the following achievements below to get the allotted gamerscore.
Unlockable How to Unlock All Multiplayer (5) Play all four multiplayer zones. Casino (10) Get to the Casino Night Zone. Chaos Emerald (10) Get one Chaos Emerald. Chaos Master (40) Get all the Chaos Emeralds. Conquering Time (10) Beat the game in under an hour. Emerald Hill (5) Clear the Emerald Hill Zone 1. Extended Super (20) Stay in Super Sonic mode for one minute. Fast Chemical (20) Beat Chemical Plant Zone 1 in under 45 seconds. Fast Emerald (15) Beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode. Super Sonic (20) Become Super Sonic. Win (35) Beat the game. Xbox Live Racer (10) Win 10 versus zones on Xbox Live.
Contributed By: Crazy Jezus.
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