Also, I am not completely sure about this. I made the first part so many times (because I was just playing around, letting my brother in law and brothers play), that I decided to start the game again. I think that if you replay the same part many times it becomes more difficult. There were a lot less items. I deleted the system file and the saves, and when I played again there were more items.
Another thing, at the end of each section it gives you sme stats. I believe it counts as kill times when you load the game from a save file too, if you were killed. I have not re-confirmed this, since the sections are quite long. So far I have about 4 hours (net) of play and I haven't finish chapter 1 yet.
And to think that RE I have finnish it in 2:15 or around