and barring the champion sword from the 2nd game, you should have at least one sun sword from the solakian temple and that will still carve up those molestors
well as a dark elemental it is weak to light elemental attacks so any weapons that deal light damage will carve it up a good weapon being the champion's sword from the 2nd game, barring that get resistances to dark and wear it down w/ other sources of damage
It's not pointless when you're interested in the story ;)