I don't get the death singer fight. I have done it like a dozen times. I think the whole fight is glitched. Is it really intended for us to ignore the knights an just draw out the wizard, kill the shrieker, get on top of a door frame and nuke the boss? Then after the boss is dead, we are intended to run out and kill mobs for 5 minutes waiting for the checkpoint? If you kill the mobs as you are working your way to the death singer, they just respawn. Is that intended? I wish bungie would start patching things because I don't think it is.