I've never had the kind of problems that i am having with this quest. Usually when i get rushed early on i can take it. However, since 90% of the enemies are elite, nothing stands a chance. It has to be done Co-Op which I've been trying. The problem is that the elite enemies 4 shot the towers and you have to outnumber an army of elites almost 10 to 1. How am i supposed to do this?