Complete the following achievements to unlock Xbox Live Gamerscore points.
Achievement | How to unlock
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- A Golden Wave ( 10 points )
| - Defeat all bosses as Super Sonic.
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- All Chaos Emeralds Found! ( 30 points )
| - Collect all seven Chaos Emeralds.
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- All Red Star Rings Found! ( 40 points )
| - Defeat the final foe after collecting every Red Star Ring.
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- All Stages Cleared! ( 10 points )
| - Defeat the final foe and watch the ending.
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- Endurance Race ( 25 points )
| - Clear all stages without returning to the World Map.
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- I Love Tails ( 10 points )
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- Metal Sonic Falls ( 5 points )
| - Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
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- Proof of Speed ( 35 points )
| - Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
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- Ring Collector ( 15 points )
| - Beat Special Stage 1 after collecting every Ring.
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- Rolling Combo! ( 5 points )
| - Activate the Rolling Combo with Sonic and Tails.
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- Tag Partner ( 10 points )
| - Upload a Multiplayer score or time.
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- The Adventure Begins ( 5 points )
| - Clear SYLVANIA CASTLE ZONE, Act 1.
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