When I made this this thread I was also doing the same thing with The Deep. And actually..it was even easier with only 2 hero's. I think I'll work on The Deep and let Urgoz's Warren rest for a while..of course I'll post the build(s) when I'm done tweaking it..ah well here is what I did so far.
"Room 1" cleared (not sure if it's room one, all the doors were open I also killed the other small Kanaxai's)
24/02/07 Update: Cleared all the "arrival" rooms and Room 2.
Now I'm kinda (.....) I need 5 people to get to the 3th room BUT I think I've something evil in mind

25/02/07 First Update: Cleared Room 1 and 2 and 3 and found a way to get to room 4.
27/02/07 Update: Cleared room 4 and 5. Managed to kill many Oni's untill I got killed by a large wurm -.-
Room 4 Kanaxai
Room 4 cleared
Room 5 Kanaxai
Room 6 Oni
27/02/07 Second Update: Cleared room 6 died at room 7
Room 6 Kanaxai
Dead -.-
We'll see how far I can get next time

Dave Tawings
I'll post the build(s) when I'm done tweaking it

Take care!
Witte Was