Orcs vs. Humans

You're not leveling up correctly. Focus on these skills next: Image, Wrath of Fire, and Combat Alchemy (if you have a mentor). If you don't have a mentor, concentrate on defense and attack. And choose a better hero, like Garun or Goshak. Orcs will accumulate rage very quickly, so attack with a single stack to build up their rage. After that, Haven will hardly be able to do anything to you. Or, better yet, send a private message to Terminator. He's an expert on Orcs.