They finished it. There’s literally no gameplay left for the ending. The final boss kills you no matter what, then you get transported to Two Brothers where the hero of that game talks at you for a bit and blames people for his game not being popular(because it was a broken piece of shit with stolen assists), then you transport back right before the boss fight, pull two levers, and the end.
Chris specifically thanked Kirb for helping him with “something special for the YIIK finale” so it’s just a matter of waiting to see when Chris decides to post it. We’re only just getting back to a regular posting schedule.