Here is the full list of all 14 Hitogata Happa achievements.
Finish the game in Solo Voyage mode with every doll.
Use the Sphere 13 doll. Destiny 13 mode doesn't count.
Finish the game in Destiny 13 mode.
Finish the game without using any bombs.
Obtain 10,000 Candy Cane Gems in one game.
Finish the game on Allemande difficulty.
Finish the game in Solo Voyage mode.
Defeat the true last boss.
Finish the game on Nobilmente difficulty.
Have 12 of every standard doll at one time.
Defeat a boss after time has run out.
Finish the game on Euridice difficulty.
Finish the game on Doomsday difficulty.
Destroy every part of every boss in one game.