I really enjoyed this game. It succeeded in what you were going for in that it captured the atmosphere and tension of being a child in the dark and it put a supernatural spin to it.
You were good at slowly building suspense and because it always stayed pretty subtle the game never fell into the trap of becoming too cheesy.
I watched a few playthroughs of the game and I felt kind of bad because one of my favorite moments was missed by a lot of people so I wanted to acknowledge that I really liked the creature in the dark at Night 4.
I also noticed that a lot of people missed the fact that the radio tells you where the creatures are. This could've easily been cheesy as well but because the "poem" and the voice are actually pretty creepy (in my opinion) and it's just such a radical departure from what came before it I think it works.
While I overall liked this part I think what would maybe help with something like this in the future is to add subtitles to it so the player knows that they're supposed to pay attention to it. This would also help with the issue that it was a bit hard for me to understand at times. I actually still don't know what the last sentence is to be honest. I can understand "One waiting for eternal slumber." but then "(From the) closet (you can tell)"? Well, I obviously figured it out anyway but I'm still really curious what he actually says.
All in all it's a really good and effective horror game. The perfect amount of subtlety so that it's still unsettling and sticks in your mind but not disappointing. :]