Achievement | How to unlock
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Beat The Clock (100 points) | Complete the Time Attack mode in less than 45 minutes.
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Blast Processing (50 points) | Clear Green Hill Zone Act 1 in under 30 seconds.
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Block Buster (100 points) | Break 16 blocks in a row without stopping.
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Bombs Away (100 points) | Defeat the boss in Starlight Zone using only the see-saw bombs.
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Chaos Connoisseur (100 points) | Collect all the Chaos Emeralds.
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Flawless Pursuit (100 points) | Clear the boss in Labyrinth Zone without getting hurt.
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Hidden Transporter (100 points) | Collect 50 Rings and take the hidden transporter path in Scrap Brain Act 2.
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One For the Road (50 points) | As a parting gift, land a final hit on Dr. Eggman's escaping Egg Mobile.
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Ramp Ring Acrobatics (50 points) | Without touching the ground, collect all the Rings in a trapezoid formation in GHZ Act 1.
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Ring King (100 points) | Collect 200 Rings.
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Secret of Marble Zone (100 points) | Activate and ride the hidden platform in Labyrinth Zone Act 1.
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Secret of Marble Zone (50 points) | Travel through a secret room in Marble Zone Act 3.
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