Right off the bat, this is one of the most beautiful games I've played in quite a while. You can easily get some beautiful desktop wallpapers from this game. I was running this game on the Xbox One and had no issues with the frame rate or graphics quality of the environment, so thumbs up all around here.
I wish I could say the same thing about the character models, though. They're decidedly "last-gen" in terms of graphics quality and it creates a rather eerie effect in contrast to the beautiful scenery.
Yes, the game is quite short. Even if you're achievement hunting, you can finish it in about 2 hours. To me, that's fine. The game still accomplishes what it set out to do anyway.
I respect that the game doesn't hold your hand through it all and there's no invasive HUD elements that pull me out of the immersion.
I'm not quite sure how to feel about the ending; it left me wondering what the story was about and how it all ties together. Perhaps another play through and/or some more research on the game is needed.
Overall, The Vanishing of Ethan Carter is a good, dare I say, even great game that has my full seal of approval.