Hello, i have recently finished the main questline of the game alongside everything possible on the map and one of the ubisoft connect challenges is still locked even though ubisoft connect tells me i'm at 100% of the game.
The challenge is "eivor's saga" and it should have unlocked since i finished the game (yes i did gunnar's quest) and it counts for 250 xp...

I do have faith in UBI, although i was very disapointed about not having achievements, I still think that they are working on it. To be honest i stopped playing for two weeks but i continued recently, the game is good as heck, i have no bugs, nothing; just one complaint, why did they showed us what capacities we'll unlock in a special direction, it was so cool to discover a path and chose wether we'll unlock the capacity or just run away from it to discover another one, but still as i said, best game, and i still believe that they will add achievements.
Don't lose hope boys, have some faith in UBI and stop listenning to those who don't.