I purchased the game a few days ago, and I have been playing "play alone" mode.
I honestly think this game is rather decent. I'm not going to lie, it is a bit rough around the edges with a slight lag when you try to walk, and an occasional animation glitch.
However, I truly enjoy the main plot line. I think it is fun to try and look for all of the documents and items that give the plot more depth. The characters when they speak seem to actually have layers in their personalities. Finally, I love the ambiance of the map and the music as they give the nuances of uneasiness that makes horror, horror.
As I said above, the game is far from perfect, but I honestly believe the good outweighs the bad.