I'm impressed you got hand tracking working with Godot on web in such a short amount of time! I had to adjust my angles and lighting a bit to get it tracking well, moving back from my camera and making sure my hands were clearly visible to the camera, but it's not my first rodeo.
I wasn't sure how my hands were influencing the environment. Literal handwaving worked well enough though, and I was able to get through the game. I can see from the video playthrough that I missed a bit of intended gameplay. I also found it unintuitive to have them mirrored, when there was a 3d environment with depth to navigate.
For the text, the story/hints mid-game about what to do go by too quickly to read and benefit from. I'd also suggest saving the fancy font for short bits of flavor, and using an easier to read font for any full-length sentences.
Now that you've got the system working, I bet you'll be able to do some real cool stuff with it, given a less absurd time constraint :)