The boss fight for the Moon Strike, is absolutely brutal, But if you keep running in circles reviving your team, (because everyone will die) you will complete it, the boss is handled differently and I don't know if Bungie did a few things to help it's really hard to tell, but often a cursed thrall will go up to the boss and just sit there stuck, shoot it before it disperses for roughly 1700~ damage. Also you can't run back into the doorway you came through to enter the boss room, because high level mobs will spawn and a screamer (hive turret) that regenerates health will decimate you. A massive amount of Knights and Wizards will spawn during the boss fight and either get stuck trying to snipe you from the ledges, or follow you around the boss in hordes. The ledges aren't a good place to shoot the boss because mobs will spawn from behind you, and will demolish your hopes and dreams, As you probably know, when you can't reach your team mates to res them just wait 30 seconds for them to respawn, just wanna make sure you keep that idea fresh because 6 -8 Knights and 2-3 Wizards are not fun to rush into just to save your team. At the end of the fight though, if you collected 4 of the gold chests there is a ledge that goes down at the far back near the cliff, where a gold chest spawns when you kill the boss, grab that but make sure you get the 4 gold chests before that one otherwise you miss the opportunity to grab a really good item. Hope the info helps. Edit: Also the boss doesn't do AOE damage, it's just an eye beam that is somewhat inaccurate, but hurts when it does hit you. (think of it like a heavy machine gun from a somewhat long range.)