The desert/mine level was really quite bad. Seems like it took all of a day to create. Just felt half-assed all around and definitely shouldn't have been used in the demo. With that mind, it does create some doubts as to how consistent the game will be. During its lengthy development, multiple developers have worked on the game so the quality will likely be all over the place. I'm hoping that the demo level was just the worst level in the game and that the other levels are significantly better.