Whats Wrong With The "Dedicated To Crimson"?

I have done evry chapter all 5 Episodes and no Chevo. The 1rst episode all on Legenday and the rest on Heroic.

I posted before I saw the other post/thread. You can replay a mission on the first episode and then it unlocks. I did Sniper Alley Solo on Easy anp popped just fine after mission (80gs).