I think you nailed the feeling of being a parent! ;D Real neat idea! Wish the shield would be just a little bit bigger though: had a lot of trouble reliably blocking projectiles on level 3. Also it felt like the son is knocked back just far enough to be right where he stood when the next bullet reaches that point, which can be quite frustrating when you're close to the end of a level. Lastly I'd shorten the duration of the fadeout when restarting the level, given how tricky later levels are and how quickly it becomes obvious when you screwed up. All in all very challenging, but well-made game. :)