Great game. I almost can't believe how polished it is... with excellent pixel art to boot. Nice take on the theme. Decent balance in the gameplay. I like the breathing in as a waiting move, but I don't like how it's required in order to attack. It creates scenarios where there is no choice but to just take the hit, and it happens often. Maybe that's intended, but being left with no options doesn't feel great. The game is still fun. I can definitely see potential for a lot of strategic depth down the line.
Unfortunately, I can't give full points for creativity, since this game is more or less derivative of Shogun Showdown. Still, really great job.
Overall, think this one is a potential winner. Nice.