Hi, i have been playing coop with a friend and after waking up with the pigs after the mission Testy Festy, guns 2-4 were disabled with a red circle through them. I was not the host, I joined my friend at the time and when he woke up with me after the mission all his guns worked just fine. I tried it in SP and those guns were still disabled. I, restarted my pc, restarted steam, i uninstalled the game and reinstalled it and same thing happens. I don't know if this may help but i had beaten the game by myself before playing with my friend I know all the slots were disabled in the mission except for the number 1 slot which gave u the slingshot, it seems to me that the disabled carried on after the mission and wasn't enabled afterwards to the join pla yer and not the host. Just a thought. Here's a video i made to show you how they are disabled.