Complete the following tasks to unlock Apple Game Center achievements.
Achievement | How to unlock
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| - Collect all Red Star Rings in Blue Sky Zone.
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| - Collect all Red Star Rings in Jungle Zone.
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- Fully Prepared (15 points)
| - Fully upgrade all power-ups.
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- Getting it Done (10 points)
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- Green Hill Climber (10 points)
| - Defeat Dr. Eggman in Green Hill Zone.
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| - Reach a height of over 500m in Arcade mode.
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| - Defeat Dr. Eggman in Jungle Zone.
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- Mountain King (15 points)
| - Defeat Dr. Eggman in Mountain Zone.
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- No Job Too Big (20 points)
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- No Job Too Small (5 points)
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- Onwards and Upwards (35 points)
| - Reach a height of over 1000m in Arcade mode.
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- Out of this World (35 points)
| - Reach a height of over 1500m in Arcade mode.
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| - Collect all Red Star Rings in Mountain Zone.
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| - Defeat Dr. Eggman in Blue Sky Zone.
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- Top of the Hill (25 points)
| - Collect all Red Star Rings in Green Hill Zone.
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