They took out the beehive? Aww. That was one of my favourite lairs. Whenever I'd get poison resistance I'd gleefully head on back to where I found the entrance and clear it, gathering up my precious honeycombs.
Clearing it as a non-poison-resistant wizard with mephitic cloud (confuse, run away, pick off) was a lot of fun too. A small grind, but a fun interlude.
* Ignite poison against poisonous monsters
* Twisted Resurrection, Simulacrum on chunks, Sublimation of blood on chunks/blood
* Fulsome Distillation + Evaporate
* Old Nemelex deck-granting system (sacrifice different stuff for specific decks)
* Mountain Dwarves
* The beehive