(edited by Martym.6971)
Forging the Pact bug still...
I couldn’t complete this until the last time they fixed this mission. There is an npc you arrive at that is dead and you can rezz him. After that the 3 npcs behind him also become rezzable. Once I did that, then I completed the explosion. When I arrived at the cave the event started up fine for me where it was blocked on previous attempts.