The objective of the game is to finish all the levels by killing the guards. The best way to kill the guards is when they have their back turned on you. Try to time your attacks. Look out for traps. You can still kill them even after they see you by evading their attacks. Use stealth over assault. Good luck!
Left / Right Arrow Keys - Move. Up Arrow Key - Jump. A, S, D - Attack.
fire: A,S & D jump: Up Arrow movement: Left / Right Arrow