So, I just started messing around with the Drell Adept last night. Holy hell are they fast and crap. Reave is good, Pull is the easiest way to deal with just about any Cerberus unshielded infantry ever, and Cluster Grenades are like...some cross between Frag Grenades, and Lift Grenades...but times THREE. The class has absolute garbage when it comes to shields though. But yeah, I just randomly tried it on Bronze since I haven't touched Adept, and only had 3 points available to the class (so I had 1 point each on Cluster Grenade, Pull, and Reave), and I only ever got knocked down and needed reviving ONCE, and that was wave 10.