*Very leisurely pace
13-15 hours if you move at a decent rate
It depends, it might have been because I am used to those sorts of games, but I just found it a bit easy overall. But yeah, thats different from person to person.
How far in are you out of interest?
On the scary comment, sure there are bits that jump out, but I didn't have a forboding sense from JUST walking down a road like I did in Silent Hill 2 for example.