Here is the full list of all 31 Rhythm Sprout: Sick Beats & Bad Sweets achievements.
Got all achievements in Rhythm Sprout!
Get to the finish line with every unlockable skin.
Get 25 CDs.
Clear All Bonus Levels.
Finish the Side Story.
Defeat Mrs. Chili.
Defeat The Power Peppers.
Your love of trap doors knows no bounds.
Answered NO on every question at least once.
Get one of the Target Scores in any level (no more, no less).
Listen to the same loop over and over again.
Answered YES on every question at least once.
Be very interested in Sugar Daddy's story.
Rewatched a cutscene multiple times.
Die several times in a row.
Finish the Main Story.
Defeat K-FLOW.
Get 100 Stars.
"Defeat" King Sugar Daddy.
Defeat Candy Mama.
Clear 10 Levels in Turbo Mode.
Get 10 CDs.
Get 50 Stars.
Defeat Count Arelle.
Clear 5 Levels in Random Mode.
Clear 5 Levels in Mirror Mode.
Hit 20 Trap Notes in one level.
Wear an unlockable skin for multiple levels.
Fall through Count Arelle's trap door.
Get your first CD.
Cleared the first level.