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