I finished the demo. You can do the first two chapters, and a little of third before the demo ends. It saves your progress, so when you download or install the full game, you can go right where you left off. I love the visuals and the game is like a cross between Okami and ICO. Left stick controls Cereza; right stick controls "Cheshire". Cereza can hold enemies with her magic, while Chesh can wallop on them. There's a bigger emphasis on exploration and puzzle solving. Combat is there, but not the main draw. That said, it feels highly polished works.
I am loving the gameplay flow so far, and this what Travis Strikes Again, if we're talking isometric spin-off titles to hack n slash games. I cannot wait to pick this up on Friday and continue onwards in Chapter 3.