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