Full list of all 39 The Banner Saga achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox One.
Get permission to destroy a varl landmark.
Visit the godstone Stravhs.
Fight 40 battles in a single playthrough.
Visit the godstone Bjorulf.
Visit the godstone Ingrid.
Visit the godstone Dundr.
Defeat an enemy with a Warleader.
Defeat an enemy with a Mender.
Visit the godstone Hadrborg.
Visit the godstone Marek.
Visit the godstone Radormyr.
Defeat an enemy with a Provoker.
Visit the godstone Denglr.
Defeat an enemy with a Siege Archer.
Visit the godstone Hridvaldyr.
Defeat an enemy with an Eagle Eye.
Defeat an enemy with a Skystriker.
Defeat an enemy with a Strongarm.
Defeat an enemy with a Hunter.
Defeat an enemy with a Shieldmaster.
Defeat an enemy with a Spearmaster.
Defeat an enemy with a Warmaster.
Defeat an enemy with a Warden.
Defeat an enemy with a Raidmaster.
Defeat an enemy with a Warhawk.
To unlock - Defeat an enemy with a Grudgewielder.
Complete the game on Normal difficulty.
Defeat an enemy with a Backbiter.
Alette doesn't want to harm humans or varl...don't make her.
Complete the game without letting anyone in your caravan die to hunger.
Complete the game on Hard difficulty level without losing a single battle.
Defeat an enemy with a Bowmaster.
Acquire 5 rank 5 items.
Complete the game without ever getting low morale.
Whew...Egil made it the whole way!
Complete the game on Hard difficulty.
Defeat an enemy with a Thrasher.
Reach Boersgard in 120 days.
Win a battle on Hard difficulty in the camp Training Tent using 6 rank 5 units.