it was so hard ;( but it was good time

Cautious thumbs up on this one. Restricting healing to using ki (and done extremely badly) is this game's biggest sin next to the story. Having no healing items is tolerable, but healing through ninpo that consume the entire meter is an awful idea. Ninpo should've worked like the previous games. Actually, go play the other two. The only thing Razor's Edge has over the other two is that all playable characters can be selected for every level. Also the graphics during cutscenes can be finicky if you're using all the settings. Other than that, I'd only recommend if you're an AVID fan of Ninja Gaiden's combat. Just be prepared to deal with this game's bad way of healing. Combat is one of the few things keeping this game from being a trainwreck, so at least Razor's Edge did something right.