I clutched an Atheon kill once, can't remember if it were hard or easy mode. We were going on the last run, his health held onto just a strand. Two were already dead, three teleported, while I stood alone outside on the Venus plate. From what I heard out of the conversation the minotaur bugged out (you all know, no explanation needed I'm sure.) The relic holder died, the other two members blinded and close to joining him I jumped forward at Atheon, fired a rocket and chucked a trip mine. He died as I died, rewards popped up and everyone freaked out, haha. It was perfect.