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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Killed him a few times legit then he just became boring and we did the cheap shotgun/shield thing on him. No good loot anyway though. Already have Etech and can't be upgraded.