Nice little game! Though I did stumble upon a few bugs. Or rather its the same kind of bug which happened multiple times.
Sometimes after finding anomalies and taking one of the stairs, they dont go away and stay there until I restart the whole game. For me it was the pebble, bae and the door without the handle which stayed and didnt disappear until game reset. They also didn't count as an anomaly even though they stayed which made some stuff quite confusing for if there is an anomaly or not.
Otherwise I also like the greytones you used for this one! Gave this game the certain feel to it!