That Ninja girl is sorta mean, I took her out with Kendo
(Kendo is sooo lame you always win, range advantage, just swing all the time and wait till your enemy has no stamina left and then finish, jump close to and always swing untill enemy has few stamina then stab-> be VERY quick!)
Bo is cool aswell but the shurykens suck too much (The move where he swings the staff over his head knocks out everything^^, my favorite, "helicopter")
Karate is most interesting and complex to me, but too short range in most cases, jump all the time, makes HUGE damage and some Enemies are quiet confused
Nunchacko is really lame, makes no fun at all, stand there all the time, keep two buttons pressed, swing and win -.-
Most enemies should be kept at distance till they have fewer stamina, they regenerate VERY fast so kill em quick^^
*Bug* By the way you can walk on the water at the top right at main screen^^