NINJA BLADE

Taken from Achieve360points.com:
Mission 1-None
Mission 2- After you've used the Grapple for the first time and killed some enemies beside some red barrels, head right and drop down where you should use the pole to cross the gap. It's in some barrels
Mission 3- Right after you gain control over Ken turn around and smash the barrels.
Mission 4- None
Mission 5- After the first invisable blastmite you will enter a large room with leaking steam pipes. Working your way around the room you'll come to a large gap you have to jump, near where you have to jump are some barrels with the Shinobi Moji in them.
Mission 6- Once you fight the two Pox Giants and Bats, get up the first wall run, its up there in the barrels where the Gunners have been.
Mission 7- On the way to the fire shuriken you cross a room with steam leaks etc. Use your ninja vision and grapple up to the second level.
Mission 8- First platform you fight on, in one of the corners in a metal crate is the SM.
Mission 9- If you follow the left path at the second fork and passed all steam leaks, to your right are 2 breakable walls after another. go through both and turn left, in the corner is the SM.

Here is a complete walkthrough with how to kill each boss, locations of items, and pictures!

http://guides.ign.com/guides/14253697/page_3.html

Here is a complete guide that shows all collectibles by level so you do not have to sort through and find each different collectible.

http://www.xbox360achievements.org/forum/showthread.php?t=12...

Also check out

http://faqs.ign.com/articles/971/971802p1.html

Hello everyone, looking I found this video (the video is not mine) I hope you help