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