Cut the Zombies

People are so scared of zombies, that they would do anything to get rid of them, without making a contact. Fortunately, we have lasers that can be used to cut the zombies into pieces.

These zombies must be stopped and you have a tool to make it. A huge, powerful laser has a power to cut the zombies and turn them into ash. However, some of these zombies hide and there is no vision of them. Despite of it, some surfaces allow you to reflect the beam, so you can get them anyway. Figure out the best way to kill all zombies and collect yellow stars.