Full list of all 23 Monument Valley 3 achievements. It takes around 1-2 hours to unlock all of the achievements in the base game on Windows.
The base game contains 15 achievements, and there is 1 DLC pack containing 8 achievements.
Complete The Garden of Life
Complete Looking-Glass House
Complete Harmonious Enclosure
Complete Gift of Light
Complete All Memories
Go into the fog area in the village
Get the fish in the village to follow your boat
Replay a memory