Here is the full list of all 15 Among Trees achievements.
Survive a bear attack
Survive for 50 days
Catch 30 fish in total
Catch a northern pike perch
Find every flora type
Create the wormwood brew
Visit all exploration areas
Harvest a turnip
Build all cabin extensions
Sleep for 5 nights in a tent
Survive for 15 days
Gather 5 golden chanterelles in one day
Sleep for 1 night in a tent
Cook a meal on the stove
Survive for 1 day