I very much enjoyed the game and it's atmosphere. That said, I do have two small complaints.
One is the lack of evolution in the dialogue. That is to say, the brothers don't react when they start disappearing. Or, when you look at your environment, even after discovering your mother's misdeeds, it still says things like "Mother's beauty is unmatched." It'd be great if it changed over time, becoming narration like "Mother's portrait isn't as pretty as you remembered."
The second is the eating mechanic. By the time you need to do it to progress the story, I got stuck for several minutes. I didn't recognize the plate of food was food because the color matched the desk (the food should maybe be brighter) and there was no indication I was interacting with it when I was "eating." No chewing noises, the food doesn't start to shrink, and also the fact that I haven't eaten anything before, so I didn't know it was a thing I could do. If, on the first day, the boys were give the last of the food supply so you could practice the eating mechanic, that would've been a great help. I know this wasn't just me, as I checked other playthroughs and many other players didn't realize what was going on either.
But I thought it was great stuff. My favorite moment was when you were crawling within the walls. It almost felt like you were breaking the game, in a entertaining way.