Batman? wrote
Also a wand of door creation would probably work as well
Wands of door creation piss off the town, I found that out when I was messing with mustard gas and trying to get something next to Petrus to throw a grenade at.
It's probably to prevent you from walling off the guards for the final showdown.
I'm also like 80% certain I pissed off the town trying to throw sulphuric acid at a wall. It might depend on whether the impact of the bottle actually causes damage to the wall's HP.
I don't remember why in particular I was trying to break the walls in Attnam but I do remember making a point of using a wand of acid rain for the job in the end.