Guardian Rank 6 - Difficult Threat Challenge Modifiers not tracking Platform: PlayStation I’ve been stuck on this Guardian Rank objective for an extended period. I completed an Ops activity on Master difficulty with Difficult Void Threat enabled. I completed the activity from start to finish and remained until completion, but the Guardian Rank objective “Difficult Threat Challenge Modifiers” did not complete. I have also completed the Trade-Off Challenge Modifier objective successfully, so I know I’m selecting modifiers correctly. This objective simply will not track on my account.