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