I had some issues getting this, took us probably well over 40 attempts over the course of one week, although most of those were disconnects within the first few minutes (this was around Christmas time and on the xbox one, so the service was having some issues as we all remember, and destiny has always been known for random disconnects when the service is working fine). The only times we actually had someone die was once on the Templar when someone fired a rocket inside a detainment bubble, so our whole team advised against using rockets on the Templar entirely, it took a few more cycles, but it was far safer. The other times people died was that jumping puzzle. Please people, you need to practice this to the point where you can do 100 attempts and make it over 100 times doing the exact same thing every time. Know when and where to jump (two edges will cause you to slide off along the wall, jumping to the third disappearing platform is good enough for all classes to reach the wall safely). If you're a hunter that can blade dance across safely, do it, if you're a gunslinger without the blade dance unlocked, please use the triple jump on this part and pretty much all jumping sections. I know the higher double jump is amazing, but when you're falling large distances, it means you have to time that second jump way more precisely to not die from fall damage, so get off your pedestal and use the inferior triple jump for better fall control. The last piece of advice, don't go to the middle platform for atheon, just go to the middle along the back wall (the door you enter from) and shoot any supplicants on the way there, it's much safer due to atheon sometimes causing splash damage through the bubble. And if you're outside when he teleports people, have one person jump on top of the portal itself, as this keeps most of the supplicants on atheons side of the portal for the safety of the team inside. If you don't know every role on the atheon fight, learn it first. Good luck guardians!