On a quite fortunate (or so I thought) day I fell down a chute trap ending in waste scenario where a group of derelicts has already destroyed all compactors (yay, free heavy treads!) and took me for some Warlord emissary. I took them back to factory.
After the very first step on that floor most of my allies were dead as armor screw.
(https://i.imgur.com/OICu5v5.png)
Love emergent level generation capabilities of roguelikes.