OK Hizumi is easy really, if you want to pass Hizumi by your own, the next is a big spoiler
SpoilerI recommend try to kill all the ninjas that come with Hizumi first, then try to keep Hizumi more than a half screen of distance Hizumi will attack with a teleport attack in this moment he is vulnerable just crouch a shoot 1 shuriken when hit Hizumi wait 1 second or 1,5 second then shoot again and repeat it till he die, you have many thing on your side, when you press B release a katana move when you make this strike you are invincible Hizumi and the other ninjas can not touch you, and you have the slide move, press "down" hold it then press jump, this move is fast you can hit enemies and escape from them I abuse from this move, you can do 2 escape moves more, press 2 times down or up, I can pass this stage losing 0 lifes