I saw a lot of videos on it, and it really interesting me, as I hate deep water, would be a perfect horror game. The story the try to put in place seems very interesting. But the game doesn't seem very stable.
It is a very fun and does have some pretty scary parts. You are right though, the game is in early development and does have a few bugs. On major bug that almost everyone has is that the game will have slight stutters when loading in the map. After about 15 hours of gameplay the hiccups begin to get bigger and the game begins to crash, but you can fix it by beleting a file in the save folder. Anyway I would recommend buying the game and then if you don't love it get a refund.