Earth is invaded by aliens in this futuristic shooting upgrade game. The aliens were defeated, yet the Raze task force were infected with a zombie virus and kept in stasis until a cure was found. The aliens have returned and you have been awakened, still infected witht hte zombie virus. Use your shooting and combat skills to kill the aliens. Use the WASD KEYS or the ARROW KEYS to move. Use the SPACEBAR to jump. Use YOUR MOUSE to aim and LEFT CLICK to shoot. Use the Q and E KEYS ot the SHIFT and ENTER KEYS to select your weapon. Use the NUMBER KEYS to select a specific weapon. To use an ability, press the F KEY or the CTRL KEY. To pause, press the ESC or P KEY. Good luck!