What is the earliest each character can die?
If I'm not mistaken, Jessica is the first one that can die, at the beginning of chapter 4 if Mike doesn't reach her in time. And Sam and Mike both can't die until the very end with the cabin explosion and/or Sam getting killed by a Wendigo by moving when hiding.
A couple of other questions with regard to the Wendigo:
1) Are they blind, or at least not able to see in the dark? There's at least two times at the end where it tells you not to move the controller where a Wendigo is right in front of Sam yet they will walk away as long as you don't move.
2) Is that Hannah at the very end who gets right up by Sam and can kill her if you move? I thought I saw the tattoo on her which was the way Josh recognizes her in the mines after Sam tells him about the journal.
BARTYOUWANNASEEMYNEWCHAINSAWANDHOCKEYMASK?!?!