Use WASD or arrow keys to move the player. Click or press space key to shoot bullets. You have 3 lives. If you touch a zombie you lose a life. If you have 0 lives it is game over. You shoot a zombie to get a kill. After 30 seconds wave 2 starts. In wave 2 you have a better gun but the zombies are faster. You also get 5 lives in this wave. If you can survive wave 2 for 30 seconds then you win the game.
Thanks to SammyCheez for tutorial.
