WINDMILL SHURIKENS AND POWER UP
On chapter 4(city of fiends) of the game, when you get to Pleasure street walk towards the club.
Have a look behind you, there should be one of them pink flower things that ayane leaves for you throughout the game. It will tell you of a secret weapon that only a select few know about. To your right there is an aley way with a scarab at the end. Go back to the start aley way do a wall run on the wall to your right then to the next and then again.With abit of practice you should be able to get up on the ledge where you will find the windmill shurikens and a big X that charges your energy up.
More tricks, tips and cheats for this game are right here - Ninja Gaiden: Black cheats
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