Here is the full list of all 7 Elf Enchanter: Arousing Anima achievements.
Start a new game.
Hypnotize Miriel into doing lewd things.
Spy on Miriel's private fun.
Let the Slime King steal your waifu.
Brainwash Miriel into a lewd slave.
Win Miriel's heart and become her lover.
Get all the endings and complete the game.