I played as a Melee Rogue, and the key to them is to get as many of the AoE and stun attacks as possible.  Zev I spec'd similarly, and Leliana as a Ranged fighter.
We were all stupidly effective, especially if you spec'd all the Warriors as aggro-magnets.
	
	
	
We were all stupidly effective, especially if you spec'd all the Warriors as aggro-magnets.

 
 

 
