A really underated game.
You get to choose between to characters, Rikimaru or Ayame. They have different weapons and get to play partially different assignments. Your missions is to defeat evil. On your way you get different equipment to help you. Before every mission you get to equip yourself but only with a limited number of items so choose wisely.
So, it´s a good game all in all. Somtimes it gets a little frustrating but it grows on you and it´s always fun to sneak around and assasinate your foes. If you like ninjas, sneaking and challanging games you ought to play this.