So I killed the undying king after refusing to give him the heart of the guardian from Corsus. I got his heart and the labyrinth key. After I made the Ruin I went straight to the labyrinth and went to the purple one, it was my first time on Yaesha and the mission said to use the undying kings key. This is where I’m lost, I’ve use the labyrinth key and I’ve killed the Ravager and found Ford yet my mission is telling me to using the undying kings key. I’m unsure how to proceed since I’ve already found Ford. He gave me the key to the mirror and I used it with the group I was with but we couldn’t defeat the Nightmare(dreamer). I think I just need to defeat him but I run out of ammo before I can, and I don’t do anywhere near enough damage to defeat him. Any help is greatly appreciated thanks in advance