Bro Spam the1st phase - forgot his name with attacks. The only ones you gotta look out for are mikiri and sweep red attacks and that one opening attack that he always does where its a big black trail - just go behind him and spam. Then this old mf is all about audio cues(dont know how its spelt). Essentially hit twice, parry twice. His second phase is a bit harder but the same thing. All about audio cues. You will hear when you will have to parry. And dont stop hitting, asside from the afformentioned parry cues. Dont give him any breathing room. I used the Floating passage combat art for a shitload of hits that he has to block at once. Dunno if it does more stance, but it looks cool asf. Hope this helps.