I remember this way back, it was between 2001-2002 when I first watched it here on Newgrounds. I thought it was incredible. The majority of Flash movies from that time were usually very simple looking; but then, you have this standing out from the crowd. This video, along with many others, inspired me to get into Macromedia Flash MX and see what I can do.
Fast forward to December 2014. The video still holds up. The animation is still good like I remembered it way back then. Though the walking animation in the first scene was a bit wonky, but the subway fight scene was and still is amazing. I simply enjoyed watching it.
The only thing I can maybe see fault with is that there isn't any major improvements, I thought. Like the forementioned walking animation before he walked down the stairs being improved or something. Then again, I guess it is better to preserve than to alter it.
As for the audio, to be honest, I don't remember it all that well back then. But they sound good here at least.
Final words. Thanks for the memories of this video and the time when I shared it to all my friends (and my college professor in 2003-2004, who was impressed with your work). Good work, looking forward to the next project, whether it may be the constantly requested Genryu's Blade 2, or something different.