Very atmospheric! I loved the little footstep noises, and the ambience was great too, they really added to the quiet, mysterious theme of the the game and worked really well together. The mechanic was fun too, particularly since you could only see one character - I enjoyed the puzzles where I had to hope that the shadow was going in the right direction, because I couldn't see it! The way the lighting worked around corners was really nice aesthetically as well. I'd love to see this developed more in future, there's a lot of potential - very good job!