Personally, I found this game to be a bit slow paced. If the text was just a little faster I think the game would flow a little better. I can follow the logic of how you made the puzzles, but they don't really convey very well. Having a triangle and a circle hidden doesn't lead me to think that I need to go in the square door. What bothered me the most is that going in one wrong door means having to go through every room again instead of having the option to continue from the last room. It made it feel discouraging and annoying to pick a wrong door, since everything moves very slowly. I would have liked to see the option to select and continue from a room you've unlocked in the 'Rooms' menu.
I liked the visuals and atmosphere, although the player character seems a little bit simple and blocky in comparison to the environments. The music was good, (although any song gets annoying after looping for a while,) and the lighting effects really gave the illusion of depth to what would be otherwise flat-looking pixel art. It really brought the scenes to life.
After being called an idiot for pressing T the first time instead of E, I reloaded the page and tried pressing E to see if it would react, but it wouldn't continue until I pressed T, which was a bit of a letdown.
Cool idea; pretty good execution; overall I'd say it came out pretty good.