Use W-A-S-D for mevement, mouse for aiming and shooting.
Zombie Outbreak Arena is a fast paced top down shooter. Shoot incoming zombies for as long as you can. Enemies will grow in number and strength. Kill Zombies to Level Up and use your Skill Points to upgrade. Pick up new Weapons and Power Ups. Beware of other survivors for they can be friend or foe. Things will get fast and ugly quickly. Die and try again. And have fun!