No missable achievements (plus 9 unknown)
Sign in with Steam or Xbox to track your progress, and:
Started a new game.
Served Miyon for the first time.
Spent a day with Sasa the bellstress.
Met the West Tarians.
Crossed paths with Queen Hydrianne.
Ending 1 unlocked.
Ending 2 unlocked.
Ending 3 unlocked.
Final ending unlocked.