fighter shooter survival

Don't let the square zombies hit you if the square zombies hits you you'll lose your life if you lose all your life's when the square zombies hits you its game over so you the shooter shoot as many zombies as you can to survive to score points so save your high score when its game over  you're the shooter move around with the arrow keys on your keyboard up,down,left, and right. The space bar on your keyboard is to shoot