Zombie Killer Squad Tip #3 – More Bullets
You can get more bullets by purchasing them for 950 to 3,000 coins. Killing zombies can also give you more ammo. As you shoot them, you can collect the shells.
Zombie Killer Squad Tip #4 – Mounts and how they work
Mounts are temporary animals that help give speed to your run. There are ravens and bulls. They will not very last long, but will give you that added power to fight zombies.