Complete the following tasks to unlock Apple Game Center achievements.
Achievement | How to unlock
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| - Earn medals for all planets across all difficulties.
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| - Have 20 towers built at one time.
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- Because I Miss Two Fingers
| - Complete 30 waves without having more than 8 towers.
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| - Hit 5 or more enemies with one tower in one shot.
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| - Get 1,000 tower upgrades.
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- Exterminate...Exterminate
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- Fort Knox, Eat Your Heart Out
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| - Defeat 100 waves on Magna Primein freeplay mode.
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| - Reach wave 20 eith only Gauss Turrets.
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| - Earn medals for all planets on easy difficulty.
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- Ladies and Gentleman, We Got Him
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| - Defeat 100 waves on Cabal Installation in freeplay mode.
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- Nothing's Gonna Stop Me Now
| - Fully upgrade 2 Quantum Launchers in one session.
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| - Finish a session with the shield wall undamaged.
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| - Hit 3 or more enemies with one tower in one shot.
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| - Defeat 100 waves on Outpost D-13 in freeplay mode.
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| - Build 2 Quantun Launchers in one sessions.
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| - Earn medals for all planest of normal difficulty.
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| - Defeat 100 waves on Tellora in freeplay mode.
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| - Earn medals for all planets on hard difficulty.
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- Still Haven't Learned, Have They?
| - Defeat 100 waves on Soristi in freeplay mode.
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| - Have 2 waves active in one session.
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| - Defeat 100 waves on Nova Cratos in freeplay mode.
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| - Have 30 towers built at one time.
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| - Have 3 waves active in one session.
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- These Here Towers Are Mine
| - Complete 40 waves without selling any towers.
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| - Defeat 100 waves on Rhydon in freeplay mode.
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- You Can Lance, For Inspiration
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- You Know What Nemesis Means?
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