Question: Is it possible to get an 'S' rank in Resident Evil 6? If so, what are the general requirements? I know some will probably be subjective to the level (time and enemies) but what about accuracy and deaths? is there a set rule for an 'S' rank? (assuming it is even possible)

This was the case in most of previous games. So far my best is an A rank, and I suppose the closest I have to knowing if an 'S' rank is possible is that my number of deaths was at 1 (which gave me an 'A' rank) and I wonder if 0 deaths would be an 'S' rank.

Anybody got anything better than an A?

Answer: 
While I do not own the game, someone took the time to upload a set of videos where they play through chapter 1 on professional (so they have a bunch of things unlocked, making everything much easier).

If you look at [these](http://www.youtube.com/watch?v=2nGwPZpcCmU) [three](http://www.youtube.com/watch?v=XZLkjhXphkk) [videos](http://www.youtube.com/watch?v=j8JUn4dVN8g), you can see them attain an S rank on that chapter, with relevant tips.

The important bit, though, is probably this:
![Criteria?](https://i.stack.imgur.com/rutI5.jpg)

While the above aren't necessarily the minimum criteria for an S rank, you will definitely attain one if you are at least that good (on that specific chapter, it obviously makes sense that the criteria are different for different chapters).
Simple answer, you just need an A rank in the 4 categories. You can't get an S in each category, as obviously a zero death would count as an S, but if you get a B in any category, you'll get an A or less instead of the S.