Playing through 1&2 from scratch as I just got 3. For the life of me I can’t work this one out. I completed the lights out mission story on The Showstopper, but “The Showstopper” Challenge isn’t showing as completed. I didn’t notice until I’d finished. So I played again and did the Kruger challenge and then tried the lights again while I was there… Still nothing. I waited for Viktor to be at the beginning of the stage, tried at the end of the stage, tried at the beginning of his speech and even at the end when he’s walking off. Nothing… Help?