Someone found 3 memories in the vault that open a portal to a secret chest, just thought I'd spread the word, I don't take credit for this, just found on Reddit -First one is from the secret path to the Templar, go straight under where the first chest is when you run VoG and it should be soon after a right near a red light. Here's a vid https://www.youtube.com/watch?v=VcZC7XIkGKQ -credit to tassssssssss -Second one is somewhere in the spirit bloom chest pathway, just take it slow and find it here's a vid https://www.youtube.com/watch?v=OZdAM9WRO2Q -credit to tasssssssssss -Third ghost found in jumping puzzle, you need to do some climbing. It opens the portal and allows you inside to the point that people got to by glitching. : https://www.youtube.com/watch?v=udT5aCdw5Po -credit to tassssssssss -Here is a vid for all 3 and the final boss in the portal all in one- http://youtu.be/-oKWVXDHzCg You need to obtain all 3 in order without dying for them all to appear. If you die the first one will respawn and you need to obtain it again in 1-2-3. After this it will trigger the portal to Praedyth's Door where you can fight the "Blighted Descendant" ultra. After you defeat it a door will open for a chest where you can obtain the Cult Ghost Apparently if you go to Atheons room and go through the portals and defeat the vex it will unlock a exotic quest line (not confirmed, most likely a troll)