Sad Panda South Park reference by any chance? I waited for the Warsat event, easier than the other one. When he arrives, try and drag him away from the Warsat, preferably down towards the crashed hive ship. Then use Murmur on arc, or if you're a hunter blade dancer then use special, to drop his shield. If you've got him backed away from the action then just consistently hit him with headshots, he'll be down in seconds. That's what I did anyway, I was expecting a challenge but was surprised at how easy it was. I had two failed attempts before that which didn't even come close. So this definitely worked for me. Hope that helps.