So towards the beginning of the mission you’re supposed to grapple threshers across buildings but the grapple doesn’t last long enough it usually cuts out right before the ascent meaning you literally get dropped in the middle of nowhere with no chance of recovery because your grapple is on regular cooldown and even if you get dropped near another building or ledge there’s an invisible wall insuring death. I’ve managed to figure out to do the jump to the tormentor building with out it but if you’re not strand warlock (maybe Titan with thunder crash) you’re not making that jump.