10 achievements for 1000 Gamerscore
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10001100-01
Complete the first stage
75 Gamerscore
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10001100-10
Complete the second stage
100 Gamerscore
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10001100-11
Complete the game
125 Gamerscore
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10-00110001
Complete the first mirror stage
150 Gamerscore
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01-00110001
Complete the second mirror stage
150 Gamerscore
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11-00110001
Complete all mirror stages
150 Gamerscore
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111111
Die 63 times.
25 Gamerscore
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0011010100000000
Beat the first boss without jumping.
75 Gamerscore
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1000000010010010
Beat the second boss without dying.
75 Gamerscore
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1001001001001001
Beat the third boss without dying.
75 Gamerscore