I'm slowly working my way through hell right now. Normal and Nightmare were relatively easy, but Hell is pretty much a big road block for single-element sorceress. Whatever I can't kill, my mercenary has to. I'm currently working on getting him some better gear, since I'm doing pretty good myself, so I need to find a few pretty good runes. I think the highest one I need is an Um, and that's not entirely unrealistic to find.