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