@IgnitionBurn This is an okay difficulty. It's much harder if you add 2 white phantoms. With allies the dragon never pauses for a few seconds, open to attack like in this video. He charges forward after every attack, and quickly. Also they add a soul mage to the 4th floor of the area you go throu...
@Phrexeus Get this same exact setup, and do a charging stab on the Taurus Demon off the tower on the first boss.
I did this in NG++ with a +5 Greatsword of Artorias with no additional buffs / status and hit for ~3400.