Smaugh and Ornstein annihilated.

This is how to destroy this very hard boss in a way that's pretty much is overkill in every way. I summoned Knight Solaire but just for effect, I definitely did not need him, just made this boss fight more amusing, especially when Smaugh gets a double whammy of lightening and Soul homing sorcery. The stats and what I used are in this video too, and also this is New Game ++.