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