Phenomenal voice acting, the writing was super fun and campy, and the music added a lot to the atmosphere. The sound design during gameplay served its purpose, even if it wasn't as polished as the rest.
I would have liked a way to hear the tutorial again during gameplay, to refresh my memory about the different sounds. Although I turned out not to need it, because the positional audio was intuitive enough.
One minor issue is when I pressed Start / Escape, I just got the voice saying "No", without indicating what the question was. But I guessed from context it was asking if I wanted to quit.
My only real critique is that I'd like more depth to the gameplay, beyond just a labyrinth. More ways to interact with the environment, like unlocking doors, creating distractions, or using over-the-top spy-fi gadgets.
I hope you keep working on the game and finish the remaining missions! Despite the simple gameplay, I really enjoyed the game because of the style and personality.