Really the only knock on this is that it takes a little too long for the big man to show. But even then, this isn't a late period Showa Godzilla where the human side of things is just nutty pro-forma set-up. It is credible as folklore and really beautifully done.
And really, when he does show up it is ferocious and seamless as a practical effects showcase and just metal as hell. That score!