The ideal situation is to go in knowing nothing at all about it, however if you do that, then there is no way I would have played through the first hour, as it really isn't my type of game at all on the surface.
That's it's downfall really, and probably why it isn't that well known, it hides itself too well.
So, don't read anything about it (other than this), just play it, and know that it isn't everything it seems.