Walkthrough for the "Tribes of the East" expansion.

I'm currently playing through Zehir's third mission and am almost done! But your conversations about the last mission aren't really inspiring me! What do you have to say about it? Is it very difficult, or were most of the previous missions easy? :) Will Arantir come to kill the demons? It's a shame that Fae'daena and Rylag won't be there! :(