Demon of Hatred is hard. Not utter BS hard, but hard enough to annoy me. His charge attack is just nuts. There's almost no dodging it, so you've just gotta make sure your HP is always topped off at max, or else a single charge attack will kill you. I almost had him today. He just needed two more hits and he would have died. Sadly I gotta go to the gym and then to work. Oh well. Will beat him tomorrow.
You have to be in the zone with Demon of Hatred. It took me a while to get use to his multiple attacks. Once I stopped looking at health, his health and posture and just concentrated on what he was doing, I finally took him down. I thought about doing the cheeze many times but knew I could take him.