[Zung]

The characters move faster if you let them run.
You can turn the run mode on with the right shift-key.
However, I wouldn`t let your son play it alone because there are some quite scary scenes. (Once I played it for three hours when it was already dark outside ,my parents were downstairs and my door was closed so I didn`t hear anyone.
I am not a very fearful person but there was also quite a scary music and when my brother suddenly opened the door and screamed:"Booo!", I nearly had a heart attack. (I am 15 years old and not afraid of ghost-stories or something like that))
I would also not judge the game because of some bad reports about it. It was the PC game I enjoyed most. (and I have got many games)

I hope you have fun with the game.
Zung


PS: Please excuse any mistakes in my reply. I´m from germany, so my English isn`t perfect.