Lots of elements down there.
Don't use a Deviling, because the mobs use Attribute effects, Wind; Water, Shadow, Etc.
I'm not sure how big of a problem it is, but a few of them stun, so have high VIT, or Orc Hero.
Annnd, some of them use Autoguard too. Although it isn't a huge deal, since it wears out quickly if you have 190~ Attackspeed.
Stay away from the Core, since theres quite a few ranged monsters there, and thats a no-go for mobbers usually.
Other then that, Don't use Endows, unless you want to go through stones like no other,
I already mentioned don't use Devi. Raydric will be more helpful.
Bathory too may help, If you want to avoid the shadow attacks.
That's all I can think of at the moment.