Very creative! I really liked the lore that you made for the game, it can easily be expanded a bit. It has a bit of fps drop after you get to the actual game area, but not much. Also missed more than one ending. It had space for at least one more, hope to see more in the future!
I tried to open both doors, for example, to see if I could release the monster, but couldn't. I really expected an alternative ending on that xD