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