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