| Achievement | How to unlock
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|---|
| All Collection Boxes Collected! | Open all Collection Boxes in White Space.
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| Big Bang | Get Rank S in all Acts in Sonic Generations.
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| Boom Boom Dragoon | Defeat Egg Dragoon.
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| CHAOS ISLAND Restored! | Restore the CHAOS ISLAND Stage Gate.
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| CHEMICAL PLANT Restored! | Restore the CHEMICAL PLANT Stage Gate.
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| CITY ESCAPE Restored! | Restore the CITY ESCAPE Stage Gate.
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| CRISIS CITY Restored! | Restore the CRISIS CITY Stage Gate.
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| Can't Touch This | Take no damage from the final boss and clear the stage in Sonic Generations.
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| GREEN HILL Restored! | Restore the GREEN HILL Stage Gate.
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| KINGDOM VALLEY Restored! | Restore the KINGDOM VALLEY Stage Gate.
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| Mad Skillz | Get all Skills.
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| PLANET WISP Restored! | Restore the PLANET WISP Stage Gate.
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| Perfect Punisher | Defeat Perfect Chaos.
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| RADICAL HIGHWAY Act 2 Cleared! | Clear RADICAL HIGHWAY Act 2.
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| RAIL CANYON Restored! | Restore the RAIL CANYON Stage Gate.
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| ROOFTOP RUN Restored! | Restore the ROOFTOP RUN Stage Gate.
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| Red Ring Collector | Get all Red Star Rings.
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| Rescue Professional | Rescue all Chao.
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| Rocket has been completed...? | Deliver all the rocket parts to Orbot and Cubot.
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| SEASIDE HILL Restored! | Restore the SEASIDE HILL Stage Gate.
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| SKY SANCTUARY Restored! | Restore the SKY SANCTUARY Stage Gate.
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| SPACE COLONY ARK Restored! | Restore the SPACE COLONY ARK Stage Gate.
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| SPEED HIGHWAY Restored! | Restore the SPEED HIGHWAY Stage Gate.
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| SUNSET HEIGHTS Restored! | Restore the SUNSET HEIGHTS Stage Gate.
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| Scrap Metal | Defeat Metal Sonic.
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| Shadow Boxing | Defeat Shadow.
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| Shadow Generations: (Hedge)Hogging It All Up | Get all collectibles in Shadow Generations.
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| Shadow Generations: All Stages Cleared! | Clear Shadow Generations.
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| Shadow Generations: Mission Accomplished! | Clear all the Challenge Acts in Shadow Generations.
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| Silver Got Served | Defeat Silver.
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| Sonic Generations: (Hedge)Hogging It All Up! | Get all collectibles in Sonic Generations.
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| Sonic Generations: All Stages Cleared! | Clear Sonic Generations.
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| Sonic Generations: Mission Accomplished! | Clear all the Challenge Acts in Sonic Generations.
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| Sunny Side Up | Defeat Death Egg Robot.
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| Treasure Hunter | Collect all the Chaos Emeralds.
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| Ultimate Life Form | Get Rank S in all Acts in Shadow Generations.
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| Untouchable | Take no damage from the final boss and clear the stage in Shadow Generations.
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| Vanquished Biolizard | Defeat Biolizard.
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| Vanquished Mephiles | Defeat Mephiles.
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| Vanquished Metal Overlord | Defeat Metal Overlord.
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