Absolutely terrifying! Really enjoyed the setting, such a creepy and tense atmosphere. Also very much enjoyed the story along with the antagonist, scared me a few times. And of course, the graphics, perfection.
Will agree with some of the other comments that it was very challenging. Changing it to third person made it immensely easier though (I don't think I could have finished it with fixed cameras/tank controls, but I did really enjoy them).
Looking forward Chapter 2 and where this series goes :)