This is such a cool concept! The core gameplay loop is so simple yet so satisfying, and it flows incredibly well. Despite it essentially just being running through a maze, there's something incredibly immersive about the experience. The swapping between different screens creates a very dynamic loop of constantly searching for your objective and other ways to connect between screens. The graphics and user interface really play into that immersion, too.
While not a complaint, as I think this game really effectively achieves your vision, I would love to see how this experience could be built on in the future. I saw in a comment that you plan on incorporating this as a sort of minigame in a different stealth game, and that's a fantastic idea. However, in its own right, it's a really cool game, and it would be pretty cool to see other mechanics that can expand on and deepen the gameplay loop.