Full list of all 20 Völgarr the Viking achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox One.
Complete the game and earn Ending A
Complete the game with 10 or less retries (deaths)
Complete the game and earn Ending B
Reach Yggdrasil's roots
Kill Fafnir before he reaches his Dragon form
Complete any world without ever losing any equipment
Complete any world in 4 minutes or less
Find a Key Stone
Reach the alternate path for any world
Complete the game and earn Ending C
Collect a golden walrus statue
Break the Magic Seal on Fafnir's Tower
Kill 4 enemies with a single charged spear attack
Hitch a ride on a spear attached to an enemy shield
Unlock Mjolnir's power
Defeat the Lizardmen King
Block a projectile with the shield while in the air
Obtain a Warrior Spirit
Wield the fire sword
Block an attack with the shield while on a rope/chain