| Achievement | How to unlock
|
|---|
| A Golden Wave | Defeat all bosses as Super Sonic.
|
| All Chaos Emeralds Found! | Collect all seven Chaos Emeralds.
|
| All Red Star Rings Found! | Collect all Red Star Rings
|
| All Stages Cleared! | Defeat the final foe and watch the ending.
|
| Endurance Race | Clear all stages without returning to the World Map.
|
| I Love Tails | Play as Tails 50 times.
|
| Metal Sonic Falls | Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
|
| Proof of Speed | Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
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| Ring Collector | Beat Special Stage 1 after collecting every Ring.
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| Rolling Combo! | Activate the Rolling Combo with Sonic and Tails.
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| Tag Partner | Upload a Multiplayer score or time.
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| The Adventure Begins | Clear SYLVANIA CASTLE ZONE, Act 1.
|