There's a nice cheat into eliminating the Crimson Helm quickly at the final location of Okami. You have to equip the Fire Tablet. Also, you must have already learned Deluge, Water Tech 3 at the palace. If you haven't already done so, go to Queen Himoko's palace. Instead of going thorough the usual entrance, go to the back and find her right-hand maid there. She'll request that you sprinkle divine and holy water onto the four looming stones. After obtaining it, go fight Crimson Helm. But remember to equip the Fire Tablet. If you've paid enough attention, the information on the tablet says complete resistance to fire. So no matter how strong any of the fire-attributed attacks Crimson Helm does, it won't effect you at all. Unless he uses physical ones that would obviously hurt you. But one for example would be when he leaps up and impacts to the ground, and fire spreads out from him. Instead of having to jump, you can just run on over to him instead and try to deal some more damage. When he uses any fire techniques, and when you are able to get the armor off of him to attack, you can instead use Deluge and make the fire go away, instead of using Galestorm. The longer lines you use, the longer the rain will stay and keep the fire away! Also, remember that Deluge also causes massive damage continuously, as long as it's in effect. So not only do you stop him from using any fire, you also damage him in the process. Think about it, using Galestorm to get rid of the fire doesn't damage him when he uses the attacks, but Deluge does, making it faster to get his armor off. There's also the fact that when he has no armor on, instead of using the wind to buff the fire and attack, Deluge permanently gets rid of the flames and damages him, so you won't have to even bother running over to attack him as long as you draw two long vertical lines for more effect.