Ugh just ignore the spiders. How hard can it be? The fight trigger range in the game is pretty short. They aren't giving crafting materials and XP either.
My first playthrough was with a Rift Mage, with a party consists of 1 melee tank and 3 ranged, it wasn't that difficult except for the fight in the area where you have to wait for Harding. Gurd fight was a pretty intense though.
My second playthrough was with a DW Rogue Assassin, party of 2 melee and 2 ranged. In some areas it was easier, but for most of the DLC it was more difficult. Now I had less CC to deal with the archers and the maul warriors became a major threat, but I wiped the floor with Gurd, that was pretty weird, also Hakkon dropped very quickly. The 4 despair demons were killed instantly by Mark of the Rift lvl 3 and Static Cage combined, so it was hilariously easy. The Ice Giant was a major pain in the ass, I had to do multiple resurrects and I couldn't do massive damage to him without him knocking me around.