this was annoying for me too just get the anvil hammer and flash bombs and get some flash bugs and bomb material to combine for more make sure you only fight one in a area because both of them at the same time in one area is pure hell! anyway when they do a fireball hammer at their faces until they go rage (the black smoke comes out of their mouth) then you throw a flash bomb at thm blinding them they should only do the taunt move so just hammer away repeat and they will be dead in no time however word of warning when blinded they may bite or tail spin watch out and good luck!