So when you start the game as the good guy for instance, your are constantly shooting even if you don't touch the gamepad ? This is really weird, I am also running the PC version of the game and I never had this problem (and you're the first one to report it). Maybe it's a bug of Unity 5.3 that appears on on some configurations, therefore it will automatically be fixed in a next update. Just to try to understand, what is your PC's configuration ? Thanks you.