Here is the full list of all 7 Yi and the Thousand Moons achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete "Moondrops"
Complete "Orange Grey Skies"
Complete "Poster Child"
Complete "Interlude"
Complete "Chant of the Craftspeople"
Complete "A New Home"
Complete "Orange Grey Skies (Reprise)"