Full list of all 21 So Many Me achievements worth 1,000 gamerscore. It takes around 12-15 hours to unlock all of the achievements on Xbox One.
Acquire 42 costumes
Reach 100% completion
Finish the game
Collect every coin in Chrono Castle
Turn on every light in Chrono Castle
Walk around the moon
Have 3 different Transmuter Fruits on 3 ME at the same time
Acquire every ME
Unlock both gates at Volcano's entrance
Finish Chrono Castle XI with both coin bubbles collected
Finish Chrono Castle XII without turning on Etherizer
Craft 10 artifacts
In the Chono Castle, Stomp on enemies' head 10 times, without falling or creating a stone block
Defeat a Duffon
Dream.Build.Play
Defeat the rival
Fail your friends
Meet Woodword
Rescue a girl
Use the Gene Splicer to create Jellosaur
Acquire the first ME