Hey! I was in your presentation as well and I must say that I was amazed that you managed to do this all on your own.
I think that adding some sound to the speaker would be cool specially since in the game's narrative, you are communicating with via the speakers you see on screen.
Sometimes I got frustrated because I couldn't get the timing right but I had solved the puzzle (I knew what actions neeeded to be taken but I was having trouble executing on them) and when that happened I got a bit frustrated. I can't think of what I'd change in order to avoid this withou drastically impacting on the game's difficulty but I thought I'd put this out there.
I had a great many laughs jumping around, the animation for that is pretty funny.
To sum it up, good job. I am amazed that you were able to do this on your own and can't wait to see more from you in the future.