Normal, play through 29 hours. I was a loot pig and I explored the country side I took my sweet time.
Sweet Jesus how is that even possible? lol
I believe I had around 13 hours on normal. But I agree that I sometimes just skipped exploring because I wanted to see what was gonna happen in the story.
I was around 19 plus hours. Now that I know the gamer more I am playing on suvivor and will be taking the game much slower. Not only because of the difficulty(there is no hearing mode or button prompts!) but I want to soak myself into the atmosphere even more. Just by playing the first level as Sarah you get to learn so much about her by just walking around her room. Got more in touched with Sarah and Joel as I searched their rooms and looking at the pictures of them on the walls was just amazing. You can spot the picture Tommy grabbed earlier on in the game if you look.
First run through on normal 18h 35mins, although I did start off searching every room top to bottom for collectables, I neglected this in the final 3rd of the game once the action got a bit more intense. Finished with around 70% of all collectables.
Second playthrough and I'm looking to take 30h+. I want to find every collectable and read every newspaper/poster/scrap of paper/photographs. I basically want to see EVERYTHING.
Any playthroug on hard that have taken less time than 18hours, is wasting out on this great game, its not about doing it fast! Im surprised some even seem to think doing it fast is "good"...