It's not exactly mind-shatteringly great, but it's okay.
Fact is, for all the glitz and glamor, it's still the same shallow romp with slightly more interactivity than the haunted mansion at Disneyland.
Of course, it's great if you want to see more of the baffling design choices the series is famous for. Example: consider how in Mario 64, you could see where Mario is going to land (after jumping off an owl or something) by where his shadow is going. God of War's shadow system is definitely fancy, but doesn't serve this function, and it doesn't offer any other tricks to help you out with stuff like that. So, Santa Monica Studios, congrats on making something less sophisticated than an N64 game.