Game breaking shadow of war glitch

During the mission Arena, i encounter the champion first, not last and it causes endless waves of enemies at the end of the mission when I’m supposed to go to a cutscene. Please help!

Maybe they have something in a crate you can buy to help you. LOL!

Now on a serious note I did try to find info. on this and found nothing. Best of luck in figuring out what the deal is.