In Ninja Gaiden II, gamers must guide Ryu Hayabusa on a mission to avenge his clan and prevent the destruction of the human race. Armed with an assortment of ninja weaponry, players must help Ryu skillfully maneuver through a world fraught with peril and danger. Ninja Gaiden II features an all-new gameplay engine, a new auto-health regeneration system, levels, adventures, enemies and thrilling combat with an extensive assortment of ninja weaponry, representing a true evolution of the highly popular franchise. Assuming the role of a ninja warrior, players experience an all-new combat system that requires skill and mastery of their full arsenal of weapons, including Obliteration Techniques that allow players to quickly and stylishly finish off an opponent. In addition to the variety of brutal new primary weapons and enhanced versions of previous favorites, Ninja Gaiden II features unique acrobatic combat and attacks used not only by Ryu Hayabusa but also by his formidable enemies. The new auto-healing system in Ninja Gaiden II, featuring semi-permanent damage restored at save points, is the natural evolution of the franchise's distinctive gameplay and introduces a new twist to managing health. With a newly implemented auto-healing functionality and save-point system, as well as an extensive story mode and multiple difficulty levels available from the start of the game, the gameplay of Ninja Gaiden II is both accessible to more casual players and challenging to even the most demanding gamers.