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