Very nice looking demo, promising. Clean, slick design work, would like to see more.
One issue for feedback:
It looks gorgeous but there were moments where my eyes felt strained while looking around quickly - the post processing, lens blur effect and the permanent 'water droplets on the lens' overlay thing all going on at the same time... I had that feeling of wearing someone's glasses and straining to focus.
I'd definitely want to the option to disable those effects if I was playing for any length of time.