| Achievement | How to unlock
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| - Complete all levels in Alex's Bedroom.
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| - Collect all stars in The Classroom.
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- Chopper Pilot (20 points)
| - Collect all stars in The Treehouse.
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- Contraptionist (20 points)
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- It's Not Easy Being Green (20 points)
| - Collect all stars in Alex's Bedroom.
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- King of the TreeHouse (20 points)
| - Complete all levels in The Treehouse.
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| - Collect all stars in The Backyard.
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| - Complete all levels in The Backyard.
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| - Complete all levels in The Classroom.
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- World of Contraptions (20 points)
| - Complete a downloaded level.
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