Filter Shot

In this post apocalyptic world you are given a task to kill all the zombies and save innocent humans. You are equipped with a gun that can disintegrate skin and bones. But make sure you don't hurt other humans. Also the gun has a weird scope that filters your vision & allows you to see only humans, zombies or walls at a single time. You can change the filter by clicking the onscreen buttons. Touch and drag your finger on the screen to adjust the bullet trajectory (on Walls Filter) and hit the Fire Button. Warning : The zombies can move.