I can't remember the specifics about the kevlar thing but I seem to remember it was the needle point rather than the bodkin. The same head used to pierce chainmail.
As I said, there are certain dangers the map can't show. "Here by dragons." sort of stuff.
Why the underworld? I have an answer but first tell me who created the quest.
I have another question about your Aesirean armour. How do the Aesir protect joints, knees, elbows and especially armpits; after all thats the real killer.