Unlockable List Of Zombie Bashing Crap In The Air Vents:Unlock the following items by performing the corresponding tasks. For all unlockables, you need to earn an ending. If Frank dies, you fail to earn a required ending, or you choose to start a new game after meeting the requirements, you will not unlock the reward:ITEM – HOW TO UNLOCKAmmo Belt costume – Do not miss with a machinegun. If you miss, start with a new 150 round machinegun.Arthur