For player 1 (the dark-haired character) use W,A,S,D to move and E to shoot. For player 2 (the blonde-haired character) use Arrow Keys to move and L to shoot. Hold down I (i) to open the shop, and select your purchase. The price is displayed on each item. Your money will be shown in the shop (on the top right of it), and you will gain money from killing zombies. The HP bar is displayed on the top left of the screen, and each red bar next to it = 1hp. When a boss appears, a boss hp bar will be shown near the middle of the screen. There are 8 waves, each getting more difficult, and the 8th wave is free play, meaning the 8th wave lasts forever until you stop playing. Have fun!
