| Achievement | How to unlock
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| - Defeat all time trials in world 3 (Cavern).
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| - Collect all pickups in world 9 (Space).
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| - Defeat all time trials in world 2 (Volcano).
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| - Clear all action scores in world 1 (Factory).
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| - Collect all pickups in world 8 (Sky).
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| - Clear all action scores in world 10 (Dimension).
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| - Collect all pickups in world 10 (Dimension).
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| - Clear all action scores in world 5 (Jungle).
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| - Clear all action scores in world 2 (Volcano).
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| - Clear any Gas form stage without turning to gas for more than a second at a time.
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| - Defeat all 10 worlds in time attack mode.
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| - Defeat all time trials in world 4 (Desert).
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| - Clear all action scores in world 4 (Desert).
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| - Defeat 5 worlds in time attack mode.
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| - Hit safe ground after a drop of 30+ blocks using a single Metal form.
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| - Collect all pickups in world 4 (Desert).
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| - Defeat all time trials in world 9 (Space).
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| - Without using Rocket form, clear any stage with the Spike form without touching the floor after the beginning.
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| - Collect over 50 lives in arcade mode.
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| - Defeat all time trials in world 8 (Sky).
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| - Score over a million points in arcade mode.
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| - Turn to Bubble form when under 5% air in acid.
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| - Collect all pickups in world 5 (Jungle).
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| - Defeat all time trials in world 10 (Dimension).
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| - Clear all action scores in world 7 (Sewers).
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| - Reach the end of arcade mode.
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| - Clear all action scores in world 8 (Sky).
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| - Clear classic mode in any %.
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| - Defeat all time trials in world 6 (Crypt).
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| - Clear all action scores in world 9 (Space).
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| - Defeat all time trials in world 1 (Factory).
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| - Collect all pickups in world 2 (Volcano).
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| - Stay in Rocket form without switching for over 25s.
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| - Beat any world in time attack under the cumulative best time of each stage.
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| - Collect all pickups in world 3 (Cavern).
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| - Clear all action scores in world 6 (Crypt).
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| - Defeat all time trials in world 7 (Sewers).
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| - Collect all pickups in world 1 (Factory).
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| - Burn over 50 blocks in a single stage using Fire form.
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| - Clear a stage using a trick or shortcut to use at least 2 less actions than the record.
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| - Clear all action scores in world 3 (Cavern).
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| - Collect all pickups in world 6 (Crypt).
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| - Collect all pickups in world 7 (Sewers).
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| - Defeat all time trials in world 5 (Jungle).
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