How would they go to Valhalla if the monks can’t fight?
You just could still trip on a dead monk while slaughtering them and break your neck. I am sure that counts as death in battle.
Disclaimer: Not a Valhalla lawyer.
Uh, unexpected Sam Riegel/Critical Role
Historical reality - monasteries filled with monks on the verge of starvation and no gold. Vikings be disappoint.
Ripe for the taking.
Valhalla, here they come