Your mission in this zombie action-shooting game is to kill all the zombies in each level and then kill the Boss of the level to open your way to the next level. On the 4th level, you will be in the prison courtyard and you must survive the 20 waves of zombies coming to eat you. Use WASD KEYS to move around. Use YOUR MOUSE to aim and click LEFT MOUSE BUTTON to shoot. Use 1-5 NUMBER KEYS to change weapon. Use "X" KEY to bash in brawl. Press SPACEBAR to launch grenades. Use "M" KEY to open/close the map. You can use "E" KEY to skip logs and videos. Good luck!