Here is the full list of all 29 Life is Feudal: Forest Village achievements.
Build a Keep
Build 100 buildings
Reach a population of 100 people
Build a Market
Build a port
Get training
Reach a population of 500 people
Reach a population of 2000 people
Create 250 places for housing
Create 1000 places for housing
Build 500 buildings
Build 1000 buildings
Build 200 decorations
Build 1000 decorations
Train 300 people
Train 1000 people
Grow 5000 chickens
Grow 1000 cows
Build 50,000 meters of pasture
Sow 100,000 meters
Spend 1001 night in the game
Build 100 castle walls
Build 20 castle buildings
Buy 10,000 products on the market
Finish 50 expeditions
Use abilities 500 times
Plant 100 trees
Kill 100 wild animals in first person
Kill 50 wild animals on farms with livestock