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