The (K)Night of (K)Nights Butaotome ver. Add-on for Groove Coaster has 6 achievements.
Play (K)Night of (K)Nights Butaotome ver. 20 times
Play (K)Night of (K)Nights Butaotome ver. and clear all of SIMPLE, NORMAL and HARD
Play (K)Night of (K)Nights Butaotome ver. and get A Rank in SIMPLE, NORMAL and HARD
Play (K)Night of (K)Nights Butaotome ver. and get S Rank in SIMPLE, NORMAL and HARD
Play (K)Night of (K)Nights Butaotome ver. and get S+ Rank in SIMPLE, NORMAL and HARD
Play (K)Night of (K)Nights Butaotome ver. and get S++ Rank in SIMPLE, NORMAL and HARD