Here is the full list of all 21 Rhapsody II: Ballad of the Little Princess achievements.
Complete the Prologue. Kururu is off on an adventure!
Complete Act 1.
Complete Act 2.
Complete Act 3.
Complete Act 4.
Complete Act 5.
Complete Act 6.
Complete Act 7.
Complete Act 8.
Clear the game.
Finish the game on Hard.
Collect all 20 background menu illustrations.
Equip and use each of the 9 ultimate jewel magics.
Complete all entries for Kururu's diary.
Collect all of the Observation Notes which you can find in one spring.
Use each Reward at least once.
Recruit all optional puppets.
Use a combination attack.
Receive the ultimate reward from an entertained puppet.
Finish the Nyanko Slide Minigame without getting hit.
Mastered Rhapsody II: Ballad of the Little Princess and earned every achievement.