The game is very cool and well in the theme, I'm just bad at playing it and find it quite hard myself. I did not have the patience to master those advanced techniques but you explained them well in detail and i'm impressed that you implemented all those fine controls and combinations.
In the tutorial level, I could barely see the platforms (black on black) and had to squint at my screen. I understand you are in a dark and grim slaughterhouse but please add a little bit of contrast.
I like the animations of the character and visuals in general, as well as the sound effects. Some gory particle effects when you hit the blades would be so good in my opinion.
Overall, well done!