So for those of you who came here firat, the challenge mode is fairly easily explained. In short you have to one shot him. This morning I got up to go to work at 5 am on the east coast "army life" and I immediately tuned into twitch I began watching one of the main streamers and I may say, they completed the hard raid and oryx challenge mode in under.... 34 minutes. Are you kidding me?? Congrats guys. On to the defeating method, you're runner CAN be the runner the entire time. You must kill ogres and knights "on hard" and do not set the blyths off yet. and finally, you must set all 16 blyths off at the same time... and no I'm not kidding. So essentially you're doing everything the same way only when you land the kill shot, "the 16 blyths" his health will go from full to nothing, ie one shorting him.