It works! I just completed completed the game, it was fun to play! I liked the sprites and, specially, the controller of the player. It reminds me to games like Super Meat Boy. Easy to die (getting eaten by the window, the enemies are a threat just in lv7), but fun to replay in search of the good approach. Great job!
PD1: I left open the 7th level for a while (I was doing other stuff) and when I come back, the game was super laggy. Fixed when I intentionally got killed and the level restarted. Probably won't happen during normal play.
PD2: Having developped your game in Godot, I would go for the html5 export. In this way the game would be accessible through the web explorer, and more people will play, for sure.