First of all, I adore the pixel graphics, the animation style of moving enemies and visual effects, the sound effects, which remind me of Newgrounds flash games, which is why I absolutely love it.
and here is my feedback to help the game improve further:
1- Add menus, I just jump into action without a second thought!
2- The control for choosing orbs (1,2,3 on keyboard) and space bar make it difficult to control, which is the only disadvantage of the game; I believe that if you improve it, it will help the game much more.
That's all I've got, great game.