Hello there.
When I finish a kill in the arena, I go back to the camera of the introduction cutscene, then I am put back into the room and I can't leave.
Also, I have tried to get my Duty exo armor upgraded with nightvision from Petrenko, but he doesn't seem to give the upgrade when you take the option to try and do so. The only option I have left is the "Ah, sorry, not at the moment, thanks". Is there another upgrader?