Thank you very much! Yes, I was thinking about what sounds could I add. A camera snap felt to cheap for me, but some warning sounds, or an announcer who notifies you about some aspects of the game would have been nice. Too bad I don't really know where could I get those. I will take another look after the jam.
The difficulty options sound good, but I will try to make the whole game easier and add achievements instead to provide extra challenges. We'll see how that will turn out.