Here is the full list of all 50 Dead In Vinland achievements.
Give the maximum tribute to Elof
Spend a night without fire
Finish the game (Nice Vacation difficulty)
Slay Björn after poisoning him
Kill the volcano
Get the Orichalcum Breastplate
You succeeded, yet you didn't survive...
Slay Björn
Kill Elof
Explore every area of the island
Convince Njall to join your cause
Get the Orichalcum Greaves
Kill Loki
Get the Orichalcum Gauntlets
Convince Grim to join your cause
Go inside the volcano without protection and get out alive
Convince Egill to join your cause
Win 50 fights (multiple playthroughs)
Explore 100 areas
Raise 5 sheeps simultaneously
Get the Orichalcum Helmet
Convince Gwendolen to join your cause
Craft 75 upgrades (multiple playthroughs)
Get the Skull Ball
Get a character to level 15
Have 10 characters in your village
Craft all stations in the camp
Explore 50 areas
Forge 150 items (multiple playthroughs)
Deal more than 15 damage in a single hit
Get a skill up to 100
Get a character to level 10
Accumulate 10 negative traits on one character
Win 10 fights (multiple playthroughs)
Lose a character
Get a character to level 5
Kick a character
Explore 10 areas
Recruit your first ally
Win your first fight
Win a fight with only one character
Defeat 3 enemies with single attack
Win a fight with 2 looters in your team
Make Björn loses his patience
Have one of your characters murder another one
Finish the game without losing anyone (min. Survival difficulty)
Finish the game (Survival difficulty)
Finish the game (Extreme Conditions difficulty)
Finish the game (Survival difficulty and True Viking)
Finish the game (Extreme Conditions difficulty and True Viking)