The Little Higher Add-on for Groove Coaster has 6 achievements.
Play Little Higher 20 times
Play Little Higher and clear all of SIMPLE, NORMAL and HARD
Play Little Higher and get A Rank in SIMPLE, NORMAL and HARD
Play Little Higher and get S Rank in SIMPLE, NORMAL and HARD
Play Little Higher and get S+ Rank in SIMPLE, NORMAL and HARD
Play Little Higher and get S++ Rank in SIMPLE, NORMAL and HARD