Once you kill Ogres, proceed to completely ignore the blights. You need to do four cycles of this. By the end of it, each platform should have four blights stacked on top of each other, allowing you to detonate 16 blights in one cycle and then kill Oryx. That's what the Challenge is.What is this I am reading about staggering oryxx then not running to get the blythes?
This requires killing the Knights every cycle, lest they run wild and dismantle your bombs. Moreover, since Oryx takes no bomb damage (since you're just letting them stack) you won't have the "aerial bombing phase". Instead, after you stun him you'll go to Shade of Oryx every time.
I'd like to join. I'm a_javierp on PSN, let me know when to sign on.C'mon, someone has to still need to do this fucking challenge