Here is the full list of all 16 Hentai Roguelike achievements.
Unlock the Catacombs
Unlock the NaughtyBook
Unlock the Chest
Rock Stage 6
Rock Stage 5
Rock Stage 4
Rock Stage 3
Rock Stage 2
Rock Stage 1
Meet the Coliseum Challenge
Reach the end of GrassLand
Reach the end of FireLand
Reach the end of SoulCave
Kill your First Boss
Unlock Magic Staff
Rock Stage 7