| Achievement | How to unlock
|
|---|
| - Defeat all bosses as Super Sonic.
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- All Chaos Emeralds Found!
| - Collect all seven Chaos Emeralds.
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- All Red Star Rings Found!
| - Collect all Red Star Rings
|
| - Defeat the final foe and watch the ending.
|
| - Clear all stages without returning to the World Map.
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| |
| - Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
|
| - Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
|
| - Beat Special Stage 1 after collecting every Ring.
|
|
| - Activate the Rolling Combo with Sonic and Tails.
|
| - Upload a Multiplayer score or time.
|
| - Clear SYLVANIA CASTLE ZONE, Act 1.
|
