So I'm a bit stuck on Artorias in NG++. I am at SL 151, a heavy Dex/Faith build with high endurance and vitality. I tried using my trusted Uchigatana +15, but even with Sunlight Blade my damage is pretty low (about 180 per hit). Does anyone have a good strategy for him in NG++? I collected all the pyromancies and have an ascended flame as well.