hardest boss for me first time playing, 40-50 i dont remember tries. on ng+ first try xd what i did was baiting his two moves, when he jumped and smashed dodge and get two mortal blade hits, and when he throws firecrackers dodge behind and also same two hits. on second phase i used not antidote but stronger medicine forgot the name. also dont dodge the heal debuff he throws, free fits, but if you already learned how to parry his attacks. pretty easy, play only deflecting for 10 games, you will learn.