Here is the full list of all 16 HENTAI Ahegao achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Welcome to the HENTAI Ahegao
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 Complete!