Really enjoyed this. The puzzles were interesting (that last one especially made me mad, but in a good way. XD ), and the for the limited time you had to work on this, the characters and environments were really nice.
Puzzles were hard enough (for me at least) to not be frustrating, but still have some challenge that you had to think through for a few minutes though that last one was tricky in terms of realizing how many pieces there were to it. May have been more straight forward with more instructional input, but I'm fond of the "drop you in and figure it out for yourself" approach for puzzle games at times as it adds to the air of mystery.
My only real complain was the voice acting was hard to hear in the beginning and the end. Definitely could have used subtitles at least. I saw there were some accessibility features in the menu by way of color blind modes which was excellent to see. Kudos for their inclusion.
Very much wish it could have been longer. I was intrigued by the mysterious nature of it all and about what may have been going on. Great job!