Good-old ninja stealth in good traditions of tenchu series. You hide in a shadow and move without a sound. You strike suddenly and whenever an enemy sees you it is already too late for him. You will use a variety of ninja skills and devices and will reveal the story about the dangerous group of conspirators that want to provoke a war between two nations.
This video shows player's new ability to roll. While rolling, player is moving faster, then while crouching, but still he is less visible and hearable than when he is running. So player can use rolling to cross some small areas where he can be seen (doorways for example) , or to get closer to the enemy's faster.