I played for several hours today and completed the game. I won’t be deleting it from my system yet, as it has a coop mode as well as a bonus level where you shoot Nazi zombies. It’s a great game, just as good as the previous installment (if not better). Only problem is the shortness. It took about 6 hours in total to complete it. There are off course higher difficulty levels, but I’m not that interested in FPS games. I play them mainly for the story and presentation.