Laughing Banana
Weeping Pickle
This basically.His weapon's switch mode drains health. So all you need to do is aggro him and hold your ground until he inevitably switches (usually an animation that looks like he's stabbing himself). Then shit sprint out the door. He wont follow and will drain until he dies.
I tried it first, felt guilty, and ended up rushing in to finish it myself and got killed
Let's see...
I am at 28 vitality and yet it took him only two hits to murder me. Two freaking hits.
And then let's talk about his guns. A Repeating Pistol that when it hits you, it'll cost you a guaranteed lost of like, 1/4 of your health. Oh, and he's got an unlimited ammo too.
Not to mention that he's got an absurd amount of HP that even with a 30 skill with a level 6 Saw Blade it'll take a hundred and even more of swings to make a dent. Oh, he'll heal too, and for added insult he can throw at you something that'll prevent you from getting healed as well.
Fuck it, he's cheating on so many things I didn't even feel guilty about cheesing him, lol.