Playing through it a bit more, the campaign is great but its still not nearly the dark horror-fest people make it out to be. It just has more of that isolated feeling than Gears 3 (and Judgment) had, I still think Gears 2 did that tone better due to the Sires section in particular.
Its great though, impresses me how much the animations have held up, the new graphics look really great.
The only issue with it as others have said is Dom's terrible AI, he's much worse than even Baird/Cole/Kim/Carmine, they really should have made some attempt to fix that even if they just gave him a much higher damage threshold when he's an AI