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