| Achievement | How to unlock
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| - Unlock thirty art collection items with Coins.
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| - Defeat ten Moto Bugs in Sonic the Hedgehog.
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| - Defeat ten Rhinobots in Sonic the Hedgehog 3 and Knuckles.
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| - Defeat ten Stingers in Sonic the Hedgehog 2.
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| - Try the Boss Rush from any of the titles.
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| - Use Air Bubbles in Sonic the Hedgehog.
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| - Clear Sonic CD in either Anniversary or Classic Mode.
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- Cleared Sonic the Hedgehog 2
| - Clear Sonic the Hedgehog 2 in either Anniversary or Classic Mode.
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- Cleared Sonic the Hedgehog 3 and Knuckles
| - Clear Sonic the Hedgehog 3 and Knuckles in either Anniversary or Classic Mode.
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- Cleared Sonic the Hedgehog
| - Clear Sonic the Hedgehog in either Anniversary or Classic Mode.
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| - Collect three types of Shields in Sonic the Hedgehog 3 and Knuckles.
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| - Defeat a total of 200 enemies.
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| - Defeat thirty enemies with the Spin Dash.
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| - Get the jackpot in Sonic the Hedgehog 2's Casino Night Zone.
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| - Unlock six movie collection items with Coins.
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| - View a Premium Collection item from the Museum.
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| - Defeat a total of fifty enemies.
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| - Collect a total of thousand Rings.
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| - Clear ten Sonic the Hedgehog 3 and Knuckles Missions with an S rank.
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| - Win a race against Metal Sonic in Sonic CD.
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| - Clear ten Sonic CD Missions with an S rank.
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- Sonic the Hedgehog 2 Mission Master
| - Clear 10 Sonic the Hedgehog 2 Missions with an S rank.
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- Sonic the Hedgehog Mission Master
| - Clear ten Sonic the Hedgehog Missions with an S rank.
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| - Unlock ten sound collection items with Coins.
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| - Travel to the past or future in Sonic CD.
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- Very First Mission Clear!
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- Welcome to Sonic 3 and Knuckles
| - Watch the opening for Sonic the Hedgehog 3 and Knuckles.
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| - Watch the opening for Sonic CD.
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- Welcome to Sonic the Hedgehog 2
| - Watch the opening for Sonic the Hedgehog 2.
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- Welcome to Sonic the Hedgehog
| - Watch the opening for Sonic the Hedgehog.
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