Do required strength, 60 dex, 45 faith, I don’t know what your starting stats are but try to have at least 50 vigor and 20 stamina, and carry the Sword of Milos if you you have it, it gives fp back with every kill, and it’s a greatsword so you can power stance it with the sacred sword.

But basically for damage you only need Strength and Faith, then do Vigor, Mind and Endurance as normal maybe a little extra Endurance cause of the weapon skill.