You were missing many golden bosses, an undead boss, he is a magician who creates huge areas that, but I think he can only be defeated from a distance, two others are from miners, the Galtinas one, Morgana with a mace, but without a doubt the magician Of the areas it is the most difficult since it is only at a distance and if you don't ski oneshote
I tryed demon general solo in a 5.1or 5.2, full spec cursed tree 120 shadowcaller it was brutal, downed me twice I think battle axe is the way to go on that one, I couldn't beat em