And Craig as for pontiff, my best advice is to fight him like a black knight. Get a good shield, make sure you are below 70% weight and circle him. Roll when you can. Rolling is the best stragey in this fight, but a 100% shield will help.
He is also weak to fire, or chaos pyromancy. If you have two attunement slots and you have the chaos fireball (which has 0 required stats) you can take his second stage phantom out with ease.
Although, for some killing the phantom makes the fight harder because he is less aggressive with the phantom, and the phantom telegraphs his moves.
If you still have trouble, smon one, just one phantom player. It doesn't give him too much more health and you can use the phantom to heal and take hits.