Red vs Dead

In the game Red vs Dead, there are a few rules that you should follow to stay alive. First, eliminate all zombies in your sight. Second, you must not let them come near or touch you or you will lose blood until completely eliminated. Next, high level zombies will appear as you get to higher levels, then there will appear a person who can clear the zombie cemetery before they can attack the city, this person will be recognized with red hair and an antique gun. 

Love this genre? Check Zombies Are Coming and Pixel Zombies