Hello,
Wonderful game, 5/5. I think that level design is particularly shining here.
The rest is also fantastic: physics, art, music. Even the hints the Boss give to anticipate their attacks, it's all great. You developed an amazing game with some of the most basic abilities in the Metroidvania genre. That speaks volumes of your understanding of the genre and its game design.
Congratulations!
Cheers
PS: it looks like you are meticulous and you understand the details of level design. If that's the case, please don't hesitate to play our game and let us know what you think :)