I get two grav guns and aim all my weapons down at a slight angle. Nothing hits me and I heap all the enemies into a tight spot so my lasers can destroy them.
Maybe I just suck, but I can't beat the first boss. You'd think a cleric, mage, warrior and conjuror could kick in the heads of some undead but you'd be wrong. And then of course all my gear is taken once I lose to my already superior making it more impossible to kill him. I'm really not okay with losing items. It's not a good game mechanic. It doesn't make things challenging, it makes them tedious or impossible.