Here is the full list of all 18 Fair Princess Under Futa Curse achievements.
Audience with the common folk
Like animals!
Loving myself
Take care
Fun with the tutor
Punishment for not being obedient
Game ended too soon!
Understanding poetry
Fun with the nurse
Priestess and her lessons
Forbidden kiss with Selena
Finally, underwear!
Queen's instructions
Fun with the gardener
I've been cursed!
Fun with the queen
Fun with the maid
My feet