Assassin's Creed Valhalla has a tough achievement the game's community is now working together to help everyone unlock.
You can help too, by letting yourself get killed in a specific location.
The troublesome achievement, named Hall of the Slain, requires you "Avenge the death of 10 players". It's one of many awards accessible via the built-in Ubisoft Connect platform, and also one of many that suffers from bugs.