Here is the full list of all 55 Cupid Nonogram achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Completed Stage 54
Completed Stage 53
Completed Stage 52
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Completed Stage 50
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Completed Stage 55
Completed Stage 41
Completed Stage 40
Completed Stage 39
Completed Stage 38
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Completed Stage 35
Completed Stage 34
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Completed Stage 32
Completed Stage 42
Completed Stage 31
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Completed Stage 28
Completed Stage 27
Completed Stage 26
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Completed Stage 23
Completed Stage 22
Completed Stage 14
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Completed Stage 11
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Completed Stage 15
Completed Stage 10
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Completed Stage 7
Completed Stage 6
Completed Stage 5
Completed Stage 4
Completed Stage 3
Completed Stage 2
Completed Stage 1