TL;DR: it’s easier than shatts/nest, likely because it can only be done on 8/8’s; dwarf miner is wierd as an enemy.
The dungeon seems to be not quite the level of a shatts/nest. To me, it feels much closer to a tomb/trench, this could simply be because it’s only possible to try on 8/8’s with WC tops, but it seems easier than shatts.
I love the design, and if we’re going to give feedback for the encounter also, I would like to say that making the dwarf miner a quest enemy seems to not fit what he’s supposed to be based on his interactions with players. He seems to be more like a Guil, or nexus shop dude. Making him count as a quest, there should be an actual fight with him - or make the boss itself count as aquest.