I saw a review from some very objective Dutch reviewers about this (despite the name, they really are honest; Gamekings - De gamekings website, dagelijks geupdate met nieuwe videoitems en game nieuws) and this is basically the conclusion (keep in mind, I haven't played it myself):

- looking at the screen and the gamepad for different actions really builds up the tension. For example, the tablet gamepad shows only your backpack/inventory. Sometimes you need an item from your backpack, but obviously you have to keep an eye on the tv to make sure you're not being attacked and such. Immersion FTW! That's what the tablet is used for.

- however, the pace is slow. Run & gunners need not apply, as it is really a survivor game. Ammo and guns are scarce, and you get overwhelmed quickly when there's more than 3 zombies attacking you. The constant feel of vulnerability is there, which makes it pretty immersive. It's supposedly a smart game. You need to think and plan your route/actions accordingly. Personally I love that kind of gameplay, but I know it's not for everyone.

- graphically not a masterpiece, but it's supposedly very atmospheric with excellent sounddesign. The reviewers were surprised by the overall quality of the game and would recommend it to gamers who like a bit of tactical thinking and of course horror/zombies.

That's as much as I can tell you, but keep in mind this is a conclusion of someone else's review (which I found very thorough and credible). Hope it helps!