Here is the full list of all 24 The Impregnation of the Elves: Conquest of the Arrogant Fairies by Impregnation achievements.
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Achieved Ending 2
See the Goddess' True Form
Defeat all the Elves in Challenge Mode
Defeated by Idun
Defeated by Nimue
Defeated by Vivian
Destroy Dryad's armour completely
Achieved Ending 1
Victory over Idun
Destroy Idun's armour completely
Destroy Frigga's armour completely
Victory over Frigga
Defeated by Frigga
Victory over Nimue
Destroy Nimue's armour completely
Victory over Vivian
Destroy Vivian's armour completely
Victory over Nineve
Destroy Nineve's armour completely
Defeated by Nineve
Victory over Dryad
Defeated by Dryad
Passed a question once