The first naga quest subdungeon (with the slaves) has a text box that pops up on entry, which I didn't see because it went away as soon as I clicked (and I inadvertently clicked as soon as I entered). The "click anywhere to dismiss" dialogues hadn't bothered me at all up until this, I think the issue with this one is it was completely unexpected (usually they trigger on stepping onto an unusual tile).
Also, the slaves showed up with thorny bush icons instead of faces (playing as an elf).
The bronze Wizard class challenge seems to be nearly impossible if ENDISWAL doesn't spawn on the northern half (or PISORF, or WEYTWUT + LEMMISI, etc.). Unless I'm missing some obvious strategy - I suppose it's also possible with just WEYTWUT if you kill everything but the level 10 Berserkers and then WEYTWUT the boss.
It's possible to get your dodge up to 100% via GETINDARE and still not get a dodge. (I guess when you have dodge prediction it doesn't recalculate your dodge chance until after you take a hit?)