Question regarding fire sword

Does opportunist provide any benefit to this one? Or is swift slaying the deal? I´ve been using it for a bit but for some reason stormvermin seem to randomly ignore the stagger from my heavies at times.

They werent even using their overheads, just normal swipes or charges .c

If you run opportunist and 20% skaven the inconsistencies should stop. Add 10% chaos and that will help against berserkers/maulers.

Why not join the Fatshark Discord