Complete the following achievements to unlock Xbox Live Gamerscore points.
Achievement | How to unlock | Points
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| - Beat the game in hard mode
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| - Beat the game in less than two hours
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| - Get really far from Earth
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| - Get rank A in one mission
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| - Finish one mission with no casualties
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| - Finish 3 missions with no casualties
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| - Get rank A in all the missions
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| - Destroy 3 enemies with a single Gigaton Blast
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