Outside Xbox's [video] review of the game has been the best presented I've seen thus far. I hope to see an intelligently thought out and worded negative review as well, but so far, they're just complaining about length and the fact that it's not predictable enough and too hard... In which most of the footage shows the player trying to run as soon as the distractions are deployed.
Ash937 is correct in saying that the IGN reviews are directed at highly casual players, AKA the lowest common denominator. They complained about the fact that the recommended mode was the Hard difficulty...which says it all. Honestly, most of the complants about difficulty and length are what entice me, rather than put me off. I'm a casual gamer by definition (though a hardcore fan of the medium), but I crave that challenge in a game like this, rather than the bland, predictable jumpfest that is Outlast or other typical market saturating horror games.