I don't feel the character statistics are working as they should. All this within 5 minutes:
Log in to world, immediately log out:
Survived 23h 3min, 13 players killed, 573 infected killed.
Log in to world, immediately log out:
Survived 10h 49min, 0 players killed, 64 infected killed.
Log in to world, immediately log out:
Survived 5h 36min, 3 players killed, 72 infected killed.