How the hell do you kill this guy? Me and my friend will get him down to a low health and he will just become a Black Hole Thresher and down us, while we can't do anything to counter it. How do you stop him from doing it?
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Well, I killed him when I was level 36 with 3 other level 50 commandos. So, well. Bring out them 50 level commandos. [Edited on 10.08.2012 12:03 PM PDT]