I've pieced together a nice thief archer/tease hybrid from trial and error, as well as some help from some member here to back up tanks like Brint/Brienne, Arona, etc. Usually start off with Crackpowder and go into Crowd Control if the enemies are dead by the time that rolls around. For harder encounters, I save Dastardly Trick and the ultimate (I forget its name). That's usually all she wrote if they survived that long.