use less items and different armor to increase your damage bonus. lighter is better.

You're mashing the dodge button rapidly. This is screwing you over because it overloads you really quick, and you're stuck not being able to do anything.

Try hitting it just once when you see something coming.

Double shields is a turtle build; not an aggro in your face build. Alternate your block so you don't get punched through, and vomit missiles from your back and shoulders when you get the chance.