i got one of the codes from by following the other post, and downloaded this the other day.
It is a good game, and while some people will be thinking "QTE's... wtf?!" they are implemented really wel as a control system!
The demo file is huge considering you can complete the demo in less than 30mins (bout 1400mb) but i suppose that the hi-res graphics and the amount of potential "hidden" features amount to the large file size. Not the best demo in the world, but shows off some key features and the basic gameplay which whet's your appetite for wanting to play abit more!
conclusion: after playing the demo, i'm definitely buying this game.