Hello Cassio_Kenji, i just saw your game, installed and played a few levels. I am also working on a multi layered puzzle platformer prototype. From what i played of yours (got to 4th level) i liked the levels and how they were built, but sometimes i got stuck in the platforms. As soon as i get off work i will play it a again on a more serious note and take some notes that i can share with you later if you want.
Cheers