He caught me a few times as I was pelting him with the laser rifle. Then he went to the center platform and kept jumping from the floor to that ceiling fixture. At that point I switched to ion cannon and nailed him 3 or 4 times. Dead. I couldn't figure out if he got stuck in some kind of loop or if he just does that at a certain point. I will say if he gets you and throws you and you aren't near a wall.. WOW he throws you faaar.
But judging from some of the bugs and some of the ..*cough* AI *cough* I figured he got broken somehow.