As the title says, the weakness is misleading. It says there normal weapons. But if you get inside the stage, the boss will have purple color shroud which is weak against shroud destruction weapons.
purple armor is very very very hard for beat that boss monster :(
Not if you have a gear that have a lot of shroud damage. You either need to roll a good one or, add additional shroud damage via the new feature soul stone. But then again, our chances of getting those are very low. Soul stones are random and same goes for weapon rolls.
part III still ez for win, but IV and V, try to hard for win XD
please fix this bug, change armor boss to white armor XD