The Benelli M4 seems to be bugged, because it should be an semi-automated shotgun. But it's only single-shot. Also unlockable teammates would have been cool to fight not that damn alone. Special abilities should be upgradeable too. But it's a really nice game - no doubt. Takes a bit long to switch through the menus and loading a level also takes some time. Nice arsenal of weapons and solid gameplay.
Thanks Micky. your suggestions are very helpful. I will try to make a better version next time.
funny for having too many weapons to slay these zombies...