I'm going against what someone else said in the comments but..: I'm not sure the sound design goes well with the concept. From my understanding (which might be wrong) you're trying to tell a story about three souls. But there's a timer in the game and the music/ambiance seems very contemplative. Are you trying to set the mood as "rush" or as "explore and experience"? If the first option is correct, I wonder if getting an ambiance that is creepy but more active would be a better choice.
Also, I'm curious about your decision to have two items in each room but you only need the key to move ahead. Was that intentional?
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Bug Report: During my first run I got stuck in a black screen. This happened after I got the key in the first level, crossed the door and/but the game showed me a game over message anyway.
Bug Report 2: I was able to keep exploring the room in the third level even after the game over sign appeared.