Neat little thing! I did get a big Antechamber vibe. One thing I liked about antechamber was the kind of creepy ambient sound effects. I think it would be really cool to have those in here. One thing that kind of bothered me in this game is how the camera reacted to stairs. That kind of jerky motion was jarring. I know how to fix that in 2D games with camera smoothing. Check the youtube video below for a discussion. That said, this isn't a 2D game. Maybe cheat with your colliders? Set it so the rendering looks like stairs, but the actual collider is a ramp?
Also was there a secret with the bench? I tried walking all around and jumping on it, but didn't find anything. :(