| Achievement | How to unlock
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| All Clear! | Clear all four titles.
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| Art Appreciator | Unlock thirty art collection items with Coins.
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| Beware Moto Bugs! | Defeat ten Moto Bugs in Sonic the Hedgehog.
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| Beware Rhinobots! | Defeat ten Rhinobots in Sonic the Hedgehog 3 and Knuckles.
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| Beware Stingers! | Defeat ten Stingers in Sonic the Hedgehog 2.
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| Boss Rush Attempt | Try the Boss Rush from any of the titles.
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| Bubbly Breath | Use Air Bubbles in Sonic the Hedgehog.
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| Cleared Sonic CD | 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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| Complete Clear! | Unlock all Trophies.
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| Easy Peasy with Shields | Collect three types of Shields in Sonic the Hedgehog 3 and Knuckles.
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| Everyone's Hero | Defeat a total of 200 enemies.
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| Gallant Spin Dash | Defeat thirty enemies with the Spin Dash.
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| Knuckles the Echidna | Glide as Knuckles.
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| Lucky Hedgehog | Get the jackpot in Sonic the Hedgehog 2's Casino Night Zone.
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| Miles "Tails" Prower | Fly as Tails.
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| Movie Maniac | Unlock six movie collection items with Coins.
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| Museum Time | View a Premium Collection item from the Museum.
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| Newbie Hero | Defeat a total of fifty enemies.
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| Ring Collector | Collect a total of thousand Rings.
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| S3 and K Mission Master | Clear ten Sonic the Hedgehog 3 and Knuckles Missions with an S rank.
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| Shut Down Metal Sonic | Win a race against Metal Sonic in Sonic CD.
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| Sonic CD Mission Master | 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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| Sound Savant | Unlock ten sound collection items with Coins.
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| Super Sonic | Turn into Super Sonic.
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| Time Traveler | Travel to the past or future in Sonic CD.
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| To the Mirror World | Play Mirror Mode.
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| Very First Mission Clear! | Clear one Mission.
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| Welcome to Sonic 3 and Knuckles | Watch the opening for Sonic the Hedgehog 3 and Knuckles.
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| Welcome to Sonic CD | 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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