Where to Find Andhrimnir and Saehrimnir
This mystery can be found at the northwestern end of the eastern island within Asgard.
As you approach the small camp you’ll hear Andhrimnir calling for people to join him on the hunt for the great immortal boar Saehrimnir. Once you’ve spoken with him and agreed to join him on the hunt, follow Andhrimnir along the path to the south until you see Saehrimnir walking through the woods. If you engage Saehrimnir in melee combat the boar will fight back, but if you shoot it from afar it won’t have the chance. Either way, the fight will be an easy one and you’ll have plenty of help from other warriors if necessary. Once the boar is dead, the mystery will complete.