My rooster wasn’t quite that bad, but it was close. I went camping one year and found a beautiful walking stick, about four feet tall. I used that with Napoleon while I became confidant to herd him away. At about the time the battle of dominance was over, with me on the top, my sisters ran over the stick with the go-kart and broke it

but I never needed a stick again!
Anyways, I would begin by covering or blunting his spurs. I use gorilla tape or regular duct tape. Gorilla duct tape stays on for a long time—you wrap it around the spur so that the tip is covered and press the extra together at the tip of the spur so that it is covered completely with extra extending from the tip. Or you can try to blunt them, but if he begins to bleed in this area it is extremely difficult to stop (you can try to use corn starch or blood stop powder) and many roosters die from blood loss out of their spurs. If you can make his attacks pain free it will really help you to become more confidant.
Always wear jeans when you go out to see him, even in summertime. I love my rooster and am confidant around him but he is an animal and I always wear jeans around him, in case he decides to test me. He can’t grab your leg skin or pull you now. It is possible to blunt his beak, you can use dog clippers I’ve heard. Don’t go too far up or you’ll hit the “quick” of the beak. Once my sister accidentally kicked Napoleon in the beak and broke it and a lot of the quick showed. He could hardly drink but it healed and his beak grew back (if you do, you can use Neopsporin with painkiller, which a vet recommended, on the beak)
Don’t ever bend down around him! He will go for the face if you do and you don’t want him getting an eye, or any other place. It will really make you nervous around him!
Let me know if this helps! After you have grown confidence while using the stick and after duct-taping his spurs I’m sure you will be able to win this!