There's a good selection of weaponry for you to use to fight off the waves of wandering undead, including some classics like shotgun, sniper rifle, assault rifle, pistols, and more. Don't forget your melee actions. If you're surrounded by a hungry horde, just smack 'em in the grill a couple of times. You'll get a couple more seconds to reload or shoot them in the head. My favorite? Pipe bombs. There is something so satisfying about throwing a bomb into a crowd of rabid creatures who flock to the glow of the fuse, and then go boom in a mess of plasma confetti.