Full list of all 36 Stacklands achievements. It takes around 4-5 hours to unlock all of the achievements in the base game on Windows.
The base game contains 16 achievements, and there is 1 DLC pack containing 20 achievements.
Unlock all Packs
Reach Moon 24
Kill a Skeleton
Cook a Frittata
Buy something from a Travelling Cart
Kill a Rat
Get a Second Villager
Build a House
Sell a Card
Pick a Berry Bush
Create Offspring
Find a mysterious artifact
Kill the Final Boss
Get a Dog
Have 50 Gold
Sell a Card at the Market
Build a Rowboat
Build a Sloop
Unlock all Island Packs
Find Treasure
Kill the Kraken
Kill the Final Final Boss
Make Rum
Get a Villager drunk
Catch a Fish
Befriend a Pirate
Make Ceviche
Build a Greenhouse
Find the Dark Forest
Build a Stable Portal
Fight Wave Six
Fight the Wicked Witch
Build a Smithy
Train an Archer
Make a Villager wear a Rabbit Hat
Have a Villager with Combat Level 20