Excellent dungeon that is difficult, customizable, a good flow. Even updated to work with Mythic Dungeons plugin and it worked flawlessly! Always updates and I really do appreciate the time put into this!
Iron golems really go brrrr and lemme tell you from experience the little bit of customer support I needed they came in clutch.... get ready guys 1.18.2 update for this is in the works (qouted by T0xic himself.)
The updated version of Shaldorn Keep is honestly much better than it first was, lootable chests, area sealing itself so as players couldn't run away, you have to be pretty geared up to survive the dungeon, so it's awesome!
I see what you're saying and the mob fight you have posted uses several external plugins + a resource pack although it's very visually good looking indeed using shaders especially.
I focus on server performance and the ease of install for the person that purchases the pack. It actually has very complex mechanics that are not just visually flashy.