I didn't like it, almost entirely because of Anabelle's voice acting. I mean, I'm sure it wasn't her, it was probably the script (which was bad in it of itself) but it still has so much cheese in it you can't breathe anymore due to the smell. The ending was fine on the foreshadowing perspective, but it was pretty illogical and almost seemed rushed (MS Paint "Ned" head). I believe the original ending might have been the giant monster eats you, but they tacked on that he talks to you instead.
Final complaint, NOTHING IS EXPLAINED. Why are you invincible? What was up with the dead guy with the Doctor Octopus arms? What was the giant rock monster? Why didn't Ned eat you? How come the walkie-talkie stopped working in the intro? Why have the tour people never noticed THE CAVE WAS FULL OF FEROCIOUS MAN EATING MONSTERS!?
All in all, 4/10. The graphics were fine, the concept was fine, that's all I have to say.