Cool concept, some critiques of mine would be:
1. A text of wall as a tutorial is a bad idea, especially worse if it breaks the pace of the game. The music sets you up for some action, and when you start your first run, boom, text. Not nice. However I love how you named sections such as A, B, etc.
2. Game gets blund after 3-4 minutes because it doesn't introduce new mechanics.
3. The important information gets blurred out by overall design. Abilities in the right corner for example should be more obvious.
Stuff I found great:
1. No insta death, you got some time before you lose.
2. Theme is very complementiary.
3. Feedback is very good when you get a hit, that be both hit sound and the reaction sound.
4. Game gets harder in a nice pace.
5. Overall nice design.
Most my comment is obviously my personal idea and feedback, no offence.
Overall, nice game :)