Board Thread:General Discussion/@comment-12023018-20130723221806/@comment-6881629-20150719154811

They don't really have any particular weakness but they do have a perk that boosts their melee damage and high fire resist so don't use fire against them and keep in mind they can do a fair amount of melee damage. Dragonborn is made for a character at least about level twenty so if you go over to the island very early (and depending on difficulty) they may be a bit tough, and two years ago Demonprophecy was only just that level.