Walkthrough for the "Tribes of the East" expansion.

I'm currently playing the last mission of the third campaign in "Tribes of the East." I've captured the gnomes' treasure and three gold mines, and I'm playing as a gnome – I've forgotten his name. Anyway, I cleared out the underground Inferno castle. I went through the portal that opened, and there's a demon hero there, or rather, a demoness, and she keeps defeating me. Can you tell me what to do? I've replayed it three times, and the result is always the same – zero progress. I forgot to mention that I haven't been replenishing Zehir's army weekly using his ability to summon troops at the beginning of each week; I didn't want to waste those skill points.