Pros and cons are down below. Check out my vid (the 3d game in the vid):
Advantages:
1. Very nice sound design, I like that you hear something happening in the other rooms before you see it - that gives space for imagination) I got scared a lot playing this.
2. The whole note idea is pretty funny (in a good way). I like that you have to find some of them to understand what's going on or to progress.
3. I like different layers to the experience - starting off in the flat you are going places then)
4. I like that this experience had a major idea!
5. There are possibly several endings (I'm not sure, I got one and stopped there, but I have a feeling that there is more to explore).
Disadvantages (or areas to develop)):
1. It's hard to understand how to progress at first. Though I can't think of a way to make it easier - maybe that is a feature, not a disadvantage)
2. The last area is a bit obnoxious because you have to move in a specific order to finish it. It seemed like a museum with exhibitions that you have to visit before finishing. Maybe the game would benefit from putting the rooms more linear - so you don't have to run around figuring what you are supposed to investigate now.
3. The monster wasn't frightening. Though, I have to admit that everything else was scary instead) Maybe you could work a bit more on the monster's model (if you want of course)
4. The whole battery finding concept was kinda excessive. I mean you had an abundance of batteries, so you didn't think of them anyway. So this feature didn't add anything to the experience. I just don't get it why it was necessary to look for batteries in the first place.
Overall, I very much enjoyed the game! I rate it 5/5) Btw, those "around the corner" scares were brilliant! Wish to see more of them in the future projects. I also have 1 last question - WHY A SURVEILLANCE CAMERA IN THE BATHROOM?!
Hope my feedback was useful!