Here is the full list of all 100 Horny Girl achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete level 16
Complete level 15
Complete level 14
Complete level 13
Complete level 12
Complete level 11
Complete level 10
Complete level 9
Complete level 8
Complete level 7
Complete level 6
Complete level 5
Complete level 4
Complete level 3
Complete level 2
Complete level 1