Hi dudes, about the game being too difficult, there's two things to say about it.
1- If it's possible, I would like to see a gameplay from you, maybe it sounds arrogant, but you can pass stage 1 even without getting hit, it's just a matter of practice and patience, but watching someone playing will give you ideas of what's unfair on the game or what's fair but you have to be skilled.
2- I have seen 2 different people play the game, one was one of my brothers (he is very skilled) and another one was a guy who likes to play games on twitch, both of them had a hard time at first, but I think this is because they want to play this as a Ninja Gaiden game and go fast and slash everything in screen. Certainly you can do it, but it will give you a few surprises that way. My advice is to go a bit slower and also take advantage of the weapons (remember you can choose them with select button), this stage has 2 energy items so you can recover your health to make it easier, just dont go nuts as Flash and be a bit more careful.
Anyways, based on feedback we changed the boxer (enemy) to do 1 point damage instead of 2 like it was before, maybe that way, he will be less annoying for you.
Any feedback is appreciated.