Disclaimer: I couldn't figure out the puzzles (other than the glass one) and would have really liked a walkthrough.
What I liked:
- The voice acting. It was pretty well-done.
- The story was really interesting; I want to know how it ends!
- The puzzles are simple if you can get them -- like the outside one.
- The setting and theme of a church -- a risk since people don't usually like religion in games. I think it works.
What I didn't like:
- There are no hints. If you get stuck, you're stuck, there's no way to figure out what to do or how.
- The lack of feedback. Beyond the radio and glass puzzles, if you do something right, you don't know.
- I got stuck! I couldn't figure out the letter puzzle, the shapes for the glass (once it was solved), or the numbers (the comment was a dead give-away).
For a 48-hour game jam, I think it's a really well-done game. I would have liked to solve it though :)