Man I always heard Fume Knight was super hard. I think Bloodborne and Sekiro have de-sensitized me to difficulty because Fume is a cakewalk compared to most bosses in those games. His combo's aren't difficult to dodge at all and the timings are super expect-able. He takes a ton of hits and I kept having to drag him away from the 1 idol I couldn't break, but his moves are very easy to avoid. Not the easiest boss by any means, but like Ornstein and Smough (who I also 1shot), this boss gets way too much hype.