Nice game!
This game is filled with soul and energy. The controls feel responisve and the movements are quick. The enemies are unique and have their own patterns to attack. I loved the music and the sounds.
Be careful with the enemies' spawn, they appear on screen and attack with no antelation. That feels unfair and that's not what we expect even from hard games. A title screen would be perfect for the beginning of the game, or at least a "start" button.
Great job! Keep doing it well.