How do heroes handle the UW?

I just went tearassing around the FoW, got myself some shards and a few shinies, had a blast. But the UW is a little 'trickier', it has a few "gotcha" bits to it.

The issue isn't any particular part of the UW, I'm pretty sure my boys can take most of it, hard parts will be the wastes and the plains, maybe wrangling them during the invincible attaxe part, but I'm wondering about the Dhuum fight...

As I understand it(I only went that far once since it's been implemented, my memories are a little foggy and I'm not 100% sure what was going on) you have to die, talk to the mayor, and come back to the fight as a ghost, then use the ghost skill till dhuum gets sleepy, then start whupping his ass.

If my guys die, how do they get back into the fight(or can they?) How important is it to "go ghost". It looks like the reapers use the sleep skill, can I just focus on the skeletons and not dying while they make dhuum sleepy then whomp his ass or would it be faster to let a few of my guys "casperize".

I don't remember, what did res scrolls have to do with the fight? If my guys die they come back in ghost format right? do the scrolls bring back my guys as themselves or if they die in ghost form or something?

You don't have to die. the reapers use dhumms rest aswell.If one of your heroes actually dies, he is instantly teleported as a ghost back to you.

Rez scrolls are the only way of rezzing, and it ressurects in ghost from(obviously).

As for the fight, flag heroes at the entrance gate, and try to bb/knocklock dhumm.