I actually didn't like the demo. The controls were well done and intuitive but the level design was fairly lame.
Oh look, there's a bunch of climbable crap on a bunch of similar sized rooftops that all happen to run in a line that happens to coincide with my intended direction... LUCKY ME! It didn't need to be open world but an open block with drastically different pathways would have been magical. Instead I feel like I'm in a jogger's horror house sprinting by scripted animatronic enemies with conveniently lined up helicopters to jump to.
I hope the other levels offer more pathways or give a sense of "i created a new route" but so far the demo was pretty tame.