After searching something to watch I found this anime. I will be brief here.
Story: 5
Nothing new to see there If you played the game before watching. But If you haven't then there is probably nothing outstanding for horror.
Art:8
The art is pretty good there. Lighting is not that bad for anime of this genre and details are nice. The main place of all storyline looks deadly in compare with game.
Sound:8
Good sound effects with soundtrack and very nice character voice acting here is huge contribution to atmosphere of despair and unknown.
And also: In this anime I finally found perfect CV for myself.
Character:5
Not. Enough. Work.
That is OVA anyway. But still not enough detail for characters and that's The problem. If you see a stranger is dying on tv screen your reaction would probably be 'huh...' in most cases. And because of pretty unsatisfying amount of work has put in most of characters here - they are more like strangers. IMO that is disadvantage of show like that. You will not be scared by loosing some character. That's it.
Enjoyment:7
There is a lot of locations missing and story as well. But that was still enjoyable as much as I can tell.
Overall:7
Good visualisation of game. But not good enough to be a horror.
