i'm glad i got to explore the old version that just got released since the demo itself was so awsome: doesen't have any problems running on my 2005 laptop wich is great; enjoyed every part of it from exploration to combat to the character and enemy design and interactions, not only being new and refreshing but also very solid.
The best part imo was the movement, it jus feels so good. it took a few minutes to really get it but when i did it felt incredibly fluid.
in a few words, i loved the game and everything about it. I hope you're doing great and that you consider how much time you need to expand the game... and take triple.
Best of luck, the walker.