Pretty Good
It was a pretty good action based flash for someone who says that action isn't their thing. A thing you want to look out for is that some of the kicks didn't look natural. You seem to have a eye for flow of motion though there are some parts that didn't have it.
And to those that say Samurai shouldn't be able to defend themselves while unarmed, they did have unarmed martial arts in which they trained in(Jiujutsu comes to mind). There were even some that used what they learned about swordsmanship about range and was able to apply it to unarmed training.