Similar problem with Caretaker. Completed a ful run, got 3 high scores, went back through it again to do high score for Caretaker. Completed Caretaker with a platinum score, picked up rewards and went to next encounter. Has not updated the triumph so it's stuck 3/4 for all 6 members of the fireteam. Any solutions? We're going for Godslayer and this looks like it's going to lock us all out. Thanks.