Fun game! I liked the background music and the controls felt nice. Also I liked reading the little text blocks they were funny! I don't know for sure about this (maybe you want finding the hidden paths to be trial and error and I don't wanna mess with your design goals/vision), but I thought it would be cool to add some kind of sound effect or something that lets you know when you are close to a hidden no-collision tile. That way the player has an idea of the general area of the hidden path, but not the exact location so they still have to search a bit.
P.S. Fellow Godot user here who also has the default Label text in their Jam game haha.