| Achievement | How to unlock
|
|---|
| A Golden Wave (50 points) | Defeat all bosses as Super Sonic.
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| All Chaos Emeralds (100 points) | Collect all seven Chaos Emeralds.
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| All Red Star Rings (100 points) | Collect every Red Star Ring.
|
| All Stages Clear (100 points) | Defeat the final foe and watch the ending.
|
| Endurance Race (100 points) | Clear all stages without returning to the World Map.
|
| I Love Tails (100 points) | Play as Tails 15 times.
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| Metal Sonic Falls (50 points) | Defeat Metal Sonic in SKY FORTRESS ZONE, Act 1.
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| Proof of Speed (100 points) | Clear SYLVANIA CASTLE ZONE, Act 1 in one minute or less.
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| Ring Collector (100 points) | Beat Special Stage 1 after collecting every Ring.
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| Rolling Combo! (50 points) | Activate the Rolling Combo with Sonic and Tails.
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| Tag Partner (100 points) | Clear one Act in Multiplayer Mode.
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| The Adventure Begins (50 points) | Clear SYLVANIA CASTLE ZONE, Act 1.
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