Zombie Survival Run

The world is a post-apocalyptic zombie wasteland. You and your friends are out on a supply run when a massive horde of zombies swarms you. You manage to barricade yourselves inside a convenience store, but it won’t take the zombies long to break through. You have to gather supplies, find a way to send a signal for help, and get to the rooftop for pick up before the zombies break through your barricade.