Space Invaders Extreme achievements

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5-C Rank "B"
Achieve a "B" rank or better on stage 5-C.
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Mania
Play 10000 times.
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Unbreakable Cannon
Finish Arcade Mode without dying.
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5-C Rank "S"
Achieve an "S" rank on stage 5-C.
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5-B Rank "S"
Achieve an "S" rank on stage 5-B.
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EXTRA 5 Rank "A"
Achieve an "A" rank or better on Extra 5.
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3-A Rank "S"
Achieve an "S" rank on stage 3-A.
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Space Invaders Expert
Finish Arcade Mode 100 times.
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EXTRA 2 Rank "A"
Achieve an "A" rank or better on Extra 2.
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Advanced
Play 1000 times.
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EXTRA 2 Rank "B"
Achieve a "B" rank or better on Extra 2.
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EXTRA 1 Rank "S"
Achieve an "S" rank on Extra 1.
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