Very Hard advice

Good morning,

I'm currently jumping back and forth between Ninja Gaiden Black and Ninja Gaiden 2 Black on very hard. There just seems to be a high jumping difficulty between hard and very hard in both games. Do you have any advice? I really want to be able to beat these games on Master Ninja but I just don't know if I have the skill level to do it. In Ninja Gaiden Black I'm stuck at the end of the aqueducts with the fossilized fiend boss with the lasers and stuff. And then in Ninja gaiden black I finally beat the second level but now I'm having trouble with getting through the beginning part of chapter 3.