4Verse, the same tunnel that has the Sparkmaster 5000 robot will let you reach the northern beach; you take a left there, and there's a second exit. This really confused me at first, too.
As far as the OP goes, you may wanna take some time and evaluate what's doing you so much harm. Try using heal spells on the undead via Jahan, as well as blasting them with fire magic (this ignites toxic clouds). Using rain to alleviate a burn status helps, too, because you already know they'll do that. Target wizards first. I was playing a ranger, and backed him out into the hell, then the Cyclops Wizard followed me, isolating him.
