A great horror game, so many diverse ways you had managed to scare me, I was not expecting that a game could keep on edge for so long, just the simple tapping and breathings which seemed to always lead you somewhere. Even when it seemed like nothing would happen, something unexpected would catch me off guard. Even your use of jumpscares were great, they were not simply in your face moments but set up in ways in which I would not expect.
Although I have to say, the train is a cheap death, you have no forewarning of instant death and being hit means you have to start the game again. It is something I would expect when playing ‘I Wanna Be the Guy’, not when no preceding events lead you to expect this would happen.
With Ideas like this, I would love to see what you could make given a longer game, you seem to easily grasp the way to build horror in a limited environment, with puzzles just complex enough to befuddle the player for a short while.