I was thinking AoD in general is very killable now, but you're right, it's not a viable strategy for fists only runs. (I'm not saying it's impossible, but the chances are around 1 in 1000 that it's possible, in this version), still if I ever end up on AoSh or AoMr or during a strongman/demonic run and I have extreme luck with the RNG maybe I'll attempt it.
The Wall was indeed phase devices (homing to get back).
I tried a modded assault shotgun at first in the Mortuary (I brought mods in with me in preparation and I headed straight for it first thing), I expected it to work and kill at far distance, but it didn't, and I was quickly running out of shells, so I did indeed switch to FDS and had to close range to hit the Arch-Viles who didn't want to be nice and stand in front, which was extremely dangerous (MFa helped, and I had to sit next to some Mancubi & Arachni), it's definitely not something I advise and it was very costly in the supplies so I consider it a bad move, until I have the appropriate weapons or figure out a better strategy for dealing with Mortuary using shotguns. Once I reached the centre I was at least able to pick up some additional shells from dead sergeants.
I can't take credit from picking up the game quickly, as I've played UV/N! before in a previous version (pre 0.9.8.5) a long time ago, and this version gives more options and improved strategies.