Thank you! I actually learned quite a lot from your comment. The game itself isn't quite polished, a common excuse is the time but, it was my fault that I didn't BETA test the game and it's difficulty progression beforehand with somebody else.
You really lose the sense of understanding difficulty when you develop the game, thinking that everything will be easy to grasp for a new player.
As for the music, my friend L3SSEE is relatively new to the 8bit feel so we decided to go with a reliable variant which proved to be a little of topic.
Thank you again for your honest review!