I wanted to report separate oddities with the former Badlands Superboss (the one with the behemoth and the dragon eggs). For the purposes of the canonical way to beat this boss, normally there are two eggs. They hatch in 30 seconds so you have to defend them because only they can kill the behemoth, at least canonically.
This boss was also in past dungeons runs but I wouldn't be able to pinpoint which exact previous dungeons runs they were part of.
Usually you can either put armored around the units or, in my case, stack pinning archers to pin the Behemoth, but in my run, once the eggs hatched the dragons, the dragons were also doing minimal damage and I eventually won close to the timer ending.
Separately, in an unrelated issue with my own, @deft sonnet also had a run on that boss, but seemingly, in his run, the Behemoth died even before the eggs hatched.
https://clips.twitch.tv/StormyFaithfulMooseKippa-ULvcy1X78EY9sdZ0