You will not have enough power to use melee attacks and brush techniques. When you get enough ink, draw the sun to weaken True Yami. The controller will fall out of its hand and you will have a chance to attack him. Use the Solar Flare, Thunder Edge, and Tundra Beads. Brush techniques will work ok, but should be used sparingly. True Yami has almost one-hit K.O. attacks. He will whip up a tornado that, once you are trapped in it, has no escape and it will eventually kill you. Use the Gale Storm Brush to blow away the tornado, though True Yami will occasionally take away the sun so that the tornado will pursue you without you being able to use the Gale Storm Brush to blow away the tornado. Just run if this happens and wait until you are able to draw a sun and attack the controller. True Yami may also throw balls of lightning. Evade them as a barrage of a just a couple will kill you. He may also bring down a rain of fireballs that could kill you. If you manage to get hit by one, you will burn up and slowly eat your health. Use another Gale Storm Brush to put the fire out. If he uses ice, it will do significant damage and freeze you. His strongest attack is his great laser attack. Get your camera to where you can see a full view and avoid it. When the controller is visible inside the giant hand, you can easily attack it. Use plenty of health items and just attack the controller when it is visible to defeat True Yami.