10hrs to 1000? Thats a joke, right? Whatever you do you need two playthroughs plus the challenges. I just finished it on normal, was about 6-7 hrs without having to replay sections. Even that annoying final fight I wasted not more than 30 mins with. I think 10hrs to 1k is not realistic, 13-15 is a MINIMUM.
apart from this bs, the guide is great, been good help so far...