Enter the teleporter up North inside the depot. Go stairs down and head East. Eventually you’ll come across ladders heading down. Go as far south as you find a narrow path with a teleport. There’s 1 krampus and a chest.
From Edron boat, head North outside the city lines and go down to the hole. Follow the path to the Annihilator. There’s 2 ways to make this: either 4 players or have level 100 to try it solo. It has 6 Orshabaals and 1 dark wizard, so I recommend you to be at least 400 level.
Head same place as Annihilator, but go North from there. Follow the path through ladders and teleports, you’ll face 9 orshabaals on your way before the last room. The reward room has Ancalagon the Blacks, Scyllas and Krampuses.
Go to the North-west Scylla/draconis cave, same path as way to Fallen gods. The chest is guarded by 3 orshabaals, on the way you’ll face 2x orshabaals and bermuda draconises on small holes.