It won't decapitate him :)
That's my problem, he keeps coming back because I can't make his head explode or behead him :)

I had a guy pop up with a similar set, except he somehow recovered all his health after explosions. So literally the only thing I could do was flick arrows at him, at which point his crossbow would one-shot me and he would gloat and walk away. He also just randomly popped up as I was doing other stuff or tracking…

Did it, but he needs to be beheaded.

My ultimate nemesis had everything of that AND beast killer and couldn't be shot at with arrows.... :) I used to be able to stealth kill him but he learned how to not have that happen after 5 times.

This is all I have to say about that.