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