this game
Is not nearly as good as you think it is. It's repetitive, and there's a lot of aspects that make it annoying. Here's a few things that might help...
-don't have him move forward when he attacks. It's dumb.
-Life meter on the boss. So simple, but it's frustrating to be completely in the dark about how far you are from defeating him.
-The power attack is too slow. In the time it takes to do one strong attack, you can do at least two normal attacks, making it useless.
-The extreme depletion of rage if you die against the boss makes it almost worthless to restart.
If you're going to make a difficult game, it should at least be interesting, fun, and have a backstory. This had none.