When you enter through the Tomb of Kings gate, the Stygian Abyss dungeon is mostly empty, and I've explored the East side (considering the rift as middle). I have ventured to the west side and only saw The Slasher of Veils (Boss Fight). All the surrounding area is completely empty. These spawns are greatly needed due to the fact that we get our rare imbuing mats from this dungeon. (Fairy dust, etc...) I personally checked most of these zones and confirmed empty spawn: Dragon Lair, Crimson Veins, Abyssal Lair, Passage of Tears, Fire Temple Ruins. Solution (Temporary): Using [genminichamp to study what spawns and then duplicating with xmlspawner. Other than finding some spawn tables online, or simply running genworld for SA, I got no more suggestions. Good luck tr1age!