You get a mission to go kill a bad guy and found out that it was a trap and now you have to use your fighting skills to beat bad guys to the death and make your way out. Use "W", "A", "S", "D" KEYS to move around. Press "B" KEY to attack bad guys. Press "N" KEY to jump and hit "M" KEY to use the special ground punch. Press SPACEBAR to switch to the gun. Good luck!