Thought it was damn good too. I haven't played the game but know of it and seen some friends play it. Gritty indeed. And silly me forgot my indoor glasses so had to wear my sunglasses so I could see properly, drowned out some of the lighter colours. Made it more gritty and tbh maybe a lil better. I look forward to seeing more.
Funny that one reviewer panned it, choosing to focus on her lack of sex appeal. Whilst I think she is attractive, that's not the reason I watched it.
As for the supernatural element [SPOILER]the booby traps whilst somewhat stretches belief, no further than Goonies done before.[/SPOILER]