I had a harder time with this guy than any other boss, including Orphan and the Defiled chalice bosses. After 10 deaths I got pissed off enough to cheese him with lead elixirs. In my defense, I really wanted the plat trophy and wanted to get past him asap. Now that I have 100% of the trophies, I think I'll recreate the chalice and try to beat him fairly. Just thinking about it makes my head hurt though.