If I were Folsa, I'd try to keep +str gear so that you could wield some sort of mace vs assassins. Go for boneshatter then cranial or something of that nature. With daggers, I'd probably hamstring then spam stab. I wouldn't really go for artery unless you were aiming to kill entirely with bleeding. Ala, hurl torso, artery, stab. Strength maledictions for the sake of maledicting strength is probably wasted on most assassins. Stab spam is underestimated. Especially once he started doing double spin kick you might've actually killed him with it.