Here is the full list of all 22 Grow: Song of the Evertree achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Unlock the Mountainside Ward
Unlock the Valley Province
Unlock all building blueprints
First Accident World Seed created
Unlock the River Precinct
Create a Perfect World Seed for each World type
Kick around items in the Gnome House
Unlock the Forest Region
Complete a relationship character to the "Friend Ending"
Build 20 buildings
Unlock the Plains District
Inspect 20 villagers
Have 10 residents leave town
Befriend 5 critters
Talk to 20 villagers
Turn 100 items into Essences
Walk a total of 1,000 miles
Complete first district requests
Walk 500 miles
Assign first villager to a house
Unlock Book
Use the Watering Can on a bed