Pros and cons are down below) Check out my gameplay here (the game is the 2d there):
Advantages:
1. The concept is really cool! I loved that the game actually made the player run around switching the lights on instead of camping near the breaker.
2. The sound cues were an interesting way to let the player know where the lights went out. I love that idea!
Disadvantages:
1. Maybe it would be cool to see some more spooks? Jumpscares or camping monsters? Something that would make the player peep through the attic hole before actually go sprinting up there.
2. More lore is always appreciated! What the hell is going on and what is lurking in the darkness? Also, why the guy before us is so damn self-sacrificial so they use the last battery on the phone to write us a message instead of sprinting and turning every light on (that was not that hard).
Overall:
I guess the game lacked horror elements and lore for my taste. I'd rate it 4/5 because there is definitely room for improvement but that was good nonetheless.
Hope my feedback was useful!