Well..you will meet situations like this more often at the next chapter..but for this fight...i used

Ogre Menance Taunt and Enraged with Bo Lahm, Shadow of the God Rat+Mysthic Theft+Artery Gnaw with Denzel and Neela should have at least Breath of Health III skilled.

Bo Lahm does damage through reflecting damage and tanked
Denzel get the Enraged Buff from Bo Lahm, uses Mysthic theft to steal additional Buffs&silence a target, then he attacks one of the enemy casters with God Rat or crowds with Artery Gnaw
Weendaro uses her skills as fast as possible to heal/debuff, stealing life from Neela
Neela used her skills depending at the situation....someone can be killed with a Blow..kill him, severals casts can be interupted with a Escape..interrupt them..but always keep 100 MP back to heal/selfheal

If it's the fight with the casters that create a damaging area of effect, keep moving and focus on the skellies first, then focus on the casters, but do not deliver the finishing blow with a melee character, use Neela or Wendaroo to finish it, because the casters explode if I remember correctly (played it on hard).

Thank God I found this, I was going insane. I had just the exact wrong set of skills setup :)

After reading this, the fight became a cake-walk; thanks for the tips.

This is one of the "specials" of Aarklash...sometimes you have to reset all skills and search for a completly new configuration until you can beet a enemy.

If they would add a deeper story it would be a real Gem.