This is one of those books where you have to take off your "Serious Literary Critic" hat and just enjoy it for what it is. If you take that approach, you cannot fail to be entertained by what is a damn fine read.
The basic premise is one that's been done many times - man interferes with nature, nature bites back. Yes, it's full of stereotypes, yes there are factual inconsistencies, but this is, after all, a work of fiction. The bottom line is that this is a book that will keep you awake at night - initially because you can't put it down, then again because it will give you nightmares. If you like your gore to be ladled on by the bucket-load, if you like to play the "guess who's going to die next" game, then get this book. I'll be first in line for the film when it - hopefully - gets made.