Here is the full list of all 29 Longvinter achievements.
Kill a wild capercaillie
Get 10 000 in cash
Get 5 000 in cash
Unlock all plants from compendium tab
Equip a hat
Equip satellite communicator
Build a farming plot
Have inventory filled with wood
Craft an item
Build a tent
Go to snow region
Equip a weapon
Plant a berry
Cook food
Heal yourself to full health after your health drops down to 1
Place 10 items
Get killed
Catch a fish
Join a world for the first time
Get a kill
Kill 10 players
Kill 100 players
Build a fence
Plant a seed of wheat
Unlock all fishes from compendium tab
Unlock all feathers from compendium tab
Get 20 000 in cash
Place 50 items
Chop down 100 trees