Done with Nith! It was a fruitful, albeit mixed session I must say.
Halls 1 & 2 were very fun, as I mostly dealt with Flayers. So many low HP critters which was fun to just shoot them down. Hall 3 was annoying though. I faced Tomb Vipers + Returned Archers. Vipers are notorious for their Plague cloud thingy, but FA meant I had them under control to minimise merc dying. They die pretty fast. The Archers just needed a little more strategy with Slow Missile. The annoying monster though was the Night Marauder. Tanky PI unchillable monsters that flee when low health. I had to be mindful in case mobs of Vipers/Archers were still around when they fled. Irritating.
Unfortunately while fighting Nith, my PC crashed and I had to re-run the whole thing. Thankfully Hall 3 spawned Arach instead of Night Marauder, so at least I did not have to waste time killing.
Loot wise it was awesome.
Firstly, a LoH finally dropped. I don't think it will be that useful at this stage, considering that I'm left with Ancient's Way and Throne. Not many Demons to exploit I reckon. Still, nice item to have.

Then while I was running Halls 2 & 3 the second time, a Raven Frost dropped! Low AR, but yay I have CBF now which will be useful against Baal.

Other fun items that dropped during this session:
1. Nec Summoning GC
2. Butcher's Pupil
3. Fal Rune
Technically this is no longer a Single Pass playthrough cuz of the re-run but I don't really care. I'm at the end stage with most of the gears that I wished for, and have proven that I should be able to complete it (even without Raven Frost).
Anyway time to move on. 3 more sessions. Ancient's Way + Icy Cellar next. Then Ancients + Baal. Last session will be cows.