Me and my friend were playing co-op for 2 hours straight and lemme tell you this game is amazing. I only had one problem though and that is that I think you should make it so that in online co-op you have your own camera like you do in solo because when me and my friend would try and go opposite ways we would always get stuck and most likely end up dieing. I think this would be a great change and it would 100% make me and my friend want to play this demo even more and the real game even more.