This is nice! It reminds me of that streamer game from a while back (I think it was "I'm on Observation Duty"). To me it seems just as good too. The ambient music and the colorless office feel creepy, but the game isn't necessarily scary. It has halloween vibes somehow.
You *can* just go into the first doorway repeatedly by spamming w to try and get to a lower floor quickly, but that seems to backfire in the long run.
Nice job!