Hello,
Wow the good old days feeling is really strong here. Outstanding work! I liked the level design, the art, the music, the difficulty.
As a subtle thing, I think that the charged basic attack is too OP and it has too much range. It is so good that it makes me want to slow down my pace quite a lot and wait for the bar to charge even in between two enemies. Maybe should it be less OP?
But it is so subtle that it didn't prevent me from enjoying the game. Congratulations!
Cheers