Here is the full list of all 11 TASOMACHI: Behind the Twilight achievements.
Clear the Twilight Sanctuary.
Repair the airship in the Ring Sanctuary.
Restore Gengetsu Lakeside.
Restore Futago Bridge.
Restore Shiokaze Harbor.
Restore Silent Valley.
Collect all Sources of Earth.
Buy all available furniture.
Buy all available clothes.
Read all of the notes found around town.
Destroy all corrupted Sources of Earth.