I know this is ancient by this point, but I've been meaning to check it out for a long time (read: since 2022) and I finally did tonight.
Managed to get to Dungeon 8 and kill Emacs as a chaos wizard, but once I did I wasn't sure what to do since I didn't see a further down staircase or an amulet of Yendor anywhere. Emacs felt like they were meant to be a final boss carrying the amulet, but maybe I missed something.
I mean, other than that you can eat corpses to heal, that would have been useful to have figured out before I had killed Emacs. :D
Anyway, loved the game and concept so much, and I'm not sure what it says about me that I had the most fun as the chaos wizard.