It's okay. It remembers me a lot of my games, since they also use Construct 3 and Google Song Maker. It's a good effort, and it's kinda fun. The song is too short and repeats everytime you enter, leave, or die in a level. The lore is pretty fun, too. But the visuals look off, even as something handrawn. Not sure if invisible paths count as secrets.
Overall, nice work!