Here is the full list of all 18 Eastshade achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Leave Eastshade.
Complete every quest.
Brew every type of tea.
Complete every commission from Yevheniy's Art Gallery.
Reach the highest peak in Eastshade.
Correctly identify "The Thief of Sinkwood Inn."
Craft 15 canvases.
Build your first tent.
Wash up in Ingov's cave.
Buy Osha's sealant with glowstones.
Discover every location.
Collect all the candles.
Reunite the lost children with their father.
Catch 10 fish.