Block in front of him by holding B. When you see him turn blue and hold his axes up, quickly roll beside him and attack him with a combo. Then, switch to block and repeat. He should not do the three step combo he has, because every time he sees the shield, he should go for his strong attack which will give you time to perform a combo. He may also try and perform an area attack, which you can block and fit a few hits in before blocking again.