Hey!
First of all, congrats for finishing the game! How does this game have only 5 rates!? It was so awesome and the music it was amazing, I love the vibe. It was a simple game, but it was fun, you did something really cool.
If you need some feedback, here's mine: I think you should let the player to know in some way what walls are real or not because it was a trial and error and I think it can be improved, maybe some visual language. Also, I think you should put checkpoints in the game, because when the player dies he gets respawned at the beginning of the level.
Nonetheless, a very cool game, you did an amazing work!
It would be really awesome to have you playing my game too, if you don't mind of course. ^_^