Here is the full list of all 16 Rose of Winter achievements.
Finish Crow’s route five times.
Unlock all four Happy Endings.
Fly away to a happy ending with Tirune.
Unlock all four Sad Endings.
Witness Tirune’s true form.
Make out with all four Princes.
Share the story of Camellia.
Take on Kuya as your squire and ride into the sunset together.
Say goodbye to Falkner with your dignity intact.
Spend an intimate night with Falkner.
Learn a little about Falkner’s background.
Wait for Crow to return to you, for good this time.
Finally learn the full truth from Crow.
Have Crow tell your fortune.
Fight the Razorback with Kuya by your side.
Find Kuya in a compromising position.