Just ran through some ruins that I'm pretty sure was procedurally generated and not part of the hand-crafted story. But, it was kind of ludicrous?
Four levels of random ruins full of aloe fugues plants. When you step on one, 2-5 friendly duplicates of you appear. I got 5 steps in and had a literal army of me, all milling around.
The place was also full of members of the Cult of Khoxerdokht. Never heard of 'em. All hostile but easy kills.
Absurdly, every last one of them carried 200+ lbs of scrap, exotic gadgets, weird widgets, and some of the best weapons & armor I've ever seen.
All I really did was take up the rear of the parade as my duplicates formed a firing squad clearing out every room.
The boss at the bottom was "impossible" level - but like 24 of me surrounded them and unloaded with rifles while I sat off to the side and twiddled my thumbs.
It's a couple hours later and I'm still making return trips to clean up all the loot.