develop unity3d game development on unity3d for android

I'm looking for a 2d pixel art game where you have to shoot a endless swarm of zombies with your pistol, I want the character to sorta move on the background if that makes sense, they move like in old legend of Zelda. After you die I want there to be a chance of a ad playing and when the ad is done you go back to the home screen, and then you can start again. Name: Endless deads, I want to publish it on the Android and Apple app stores. I want a revision in case something's isn't right, thank you!