Is it just me or does something about co op really screw with the game? I have a great time playing alone with not too much difficulty. Anytime a friend joins or a random person it seems like I get killed constantly even though I shouldn't be and none of my hits really seem to do much. Also I'll randomly drop to the ground and die even though there are no zombies around!!! So I kick the player and everything is just fine again!
I can't stand this game in co op right now. Also it doesn't let me track any of my side quests when I have a main quest in co op. What a piss off! I was really excited to play this with people but really it's just annoying. Forever alone.