It sure is sad seeing him in this state. Einar broke awhile ago when the first sign of the settlement failing showed. He is tired of losing his home and running, and Arnheid’s village meant so much to him, so he made a decision to fight. He has no experience or strength, same goes for all the villagers that decided the same thing, and there is blood on all their hands. If not for Vargar, who knows how many of them would still be alive.
It’s just a sad state of affairs, who knows how everything would’ve played out if things had they been just a bit different (like if Ivar wasn’t in the picture).