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