Here is the full list of all 31 Going Medieval achievements.
Hunt 20x Wolves
Gather 10x Settlers
Hunt 20x Deer
Hunt 5x Wolves
Hunt 20x Hares
Dismantle 50x items
Dismantle 5x Items
Unlock 25x Research Items
Hunt 5x Deer
Survive a Full Year
Store 20,000 Nutrition
Survive Until the First Winter
Unlock 10x Research Items
Survive Until the First Autumn
Store 10,000 Nutrition
Hunt 5x Hares
Survive Until the First Summer
Unlock 5x Research Items
Survive for Seven Days
Survive the First Raid
Kill a Raider
Unlock 3x Research Items
Build an Enclosed Room
Build a Wooden Beam
Unlock First Research Item
Store 5000 Nutrition
Produce a Meal at a Campfire
Harvest 200 Crops
Survive the First Day
Harvest 50 Crops
Harvest 5 Crops