There was a grand fabulous accident, also known as a GFA, where some toxic waste drums in the area have turned the people into zombies. Stop the zombie GFA by surviving as long as you can and by finding the 3 toxic waste drums and destroying them. Ammo is limited, but you can find more in the area. Walk over ammo and health packs to collect them.
On PC: Use the Arrow keys to move player, mouse click to shoot.
Mobile: On screen arrows, tap to shoot.