This was one of the best constructive criticism i have ever received, thank you very much!
I agree with every point you made, i would really like to put rebindable keys but i still dont really know how to do that, it is a shame because i imagine that left handed people would not be able to play the game. Another peson has said that the walls look weird being all black, so now i think i should change it. I agree with the music, i have no ideia how to compose music, but when i do i plan on changing the score, but i have no ideia when that is going to happen.
I plan on improving the game, but for now i cannot, i hope in a near future i will have time, and when i do i will try to use all the criticism i read as inspiration.
So, again, thank you very much for the great comment!