I really enjoyed playing this! I'm not really sure on the purpose of the guardian angel. I didn't try it, but it felt like he wasn't actually needed. I also didn't do anything with the picture, but I completed the game, so I'm not sure what that was about. If the angel could interact with objects, rather than removing darkness, then that would bring a whole new level to the puzzles.
Super neat concept, odd house layout, loved it. Brought me back to the games I used to play on Newsgrounds. Nice work!