As a solo developer it's a great job, for a first game ever, too! Animation transitions should be worked on, I mean the one after examining the clue, I just slide wile thonking! Coudln't find one of the clues due to nice level design, couldn't find another due to poor intuitive content, I mean the clues should look distinctive in such a level, so you should pay attention to that. Also, the ending is nice and funny but the text wiped so fast I couldn't read it properly the first time and had to replay, so maybe a title screen on finding the last clue? It's for you to decide. Honestly, good job, the first game for most people is a struggle and it's great that you are taking part in a gamejam with this project, especially if you want to learn and grow in this industry. Keep up the good work, well done!