Here's a couple of vids, that might help you out, that didn't make it onto Blood & my's NecroVisioN site:
NecroVisioN - A Guide (plug, plug
). Please be warned that I am an inveterate camper, so if you don't approve of defensive play and using the map to its full, please don't view. I think I made these at "Demon Crusher" difficulty but, if not, it was "Man of Courage", so they are viable for most play.
Here's Azazel's Beast in just under a minute:
Azazel's Beast (6Mb)
If you want to preserve ammo, then it is possible to kill all the Demons before Azazel with the ShadowHand Claw, especially if you get a good Fury level going.
So, here's Azazel taken out with a WWI Rifle!!
I used the rifle for fun but any weapon would work, as well as ShadowHand attacks. It's the protective area of the map that's important:
Azazel (25Mb)
I hope they help you out and good luck.