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