Simply tap the screen to shoot the zombie hordes. If you shoot like a maniac you might just live long enough to grab the shotgun.
That is all. You're on your own with only your skills and your lactic acid tolerance to help you. We don't think you're gonna make it...
* Zombies D20 contains twitter and facebook options to share your best times and check your friends on the leaderboard.
* There's also an ad-supported free version of the game elsewhere on the store.