I'm trying to do the Battle of Fort Trinity part of the personal story, however, there is some confusion and bugs. First of all, the personal story starts with discussion of an "Orb" I apparently recovered and needing to go back and rescue Apatia. I don't remember any of this. Also, near the end after putting the orb back in its housing it becomes impossible to progress as the Risen Knights attacking the gate respawn infinitely. I was wondering if anyone else was having this problem and if someone can explain about this mysterious orb.