Same for me and my mates. We traded with the boss ain't going to lie. All of us died with his last stand mechanic. However if ammo economy wasn't so trash during that fight then the trade wouldn't of happened. However the challenges said we finished we got the loot and emblem and boss was dead. Unlocked the vendor ect. However I left team then joined back to get revives however I spawned instant death over and over. Milestone still says defy leviathan emperor the raid tick in clan never got ticked nor did we get the achievement. The difficulty of that encounter and how presise you have to be [spoiler]in the shadow realm[/spoiler] can't be buggy like this. I had a horrible time during that encounter. Some may call it torture and not cool that I have to do the whole raid again to get the rewards promised to me. Has bungie said anything about this? I can't find a response anywhere... Not something you should keep quiet on.