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