Here is the full list of all 12 Ladies Orders achievements.
Defeat Liluth Xilris and Imizael Dorwarin.
Defeat Ygannea Perthyra.
Defeat Abû Nas.r Pârsâ.
Defeat Sayyid Amîr Kulâl.
Defeat Qutham Shaykh.
Defeat Gawhar Shâd.
Defeat the Minotaur.
Defeat the Nightmare Lieutenant.
Defeat the Dark Magician.
Defeat the Queen of Pain.
Defeat Mahistî.
Win the game.