Here is the full list of all 100 Synthwave Runner achievements.
Synthwave Runner 2
Synthwave Runner 3
Synthwave Runner 4
Synthwave Runner 5
Synthwave Runner 6
Synthwave Runner 7
Synthwave Runner 8
Synthwave Runner 9
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Synthwave Runner 24
Synthwave Runner 25
Synthwave Runner 26
Synthwave Runner 27
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Synthwave Runner 30
Synthwave Runner 31
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Synthwave Runner 33
Synthwave Runner 34
Synthwave Runner 35
Synthwave Runner 36
Synthwave Runner 37
Synthwave Runner 38
Synthwave Runner 39
Synthwave Runner 40
Synthwave Runner 41
Synthwave Runner 42
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Synthwave Runner 44
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Synthwave Runner 49
Synthwave Runner 50
Synthwave Runner 51
Synthwave Runner 52
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Synthwave Runner 55
Synthwave Runner 56
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Synthwave Runner 70
Synthwave Runner 71
Synthwave Runner 72
Synthwave Runner 73
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Synthwave Runner 76
Synthwave Runner 77
Synthwave Runner 78
Synthwave Runner 79
Synthwave Runner 80
Synthwave Runner 81
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Synthwave Runner 83
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Synthwave Runner 86
Synthwave Runner 87
Synthwave Runner 88
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Synthwave Runner 90
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Synthwave Runner 99
Synthwave Runner 100
Synthwave Runner 1