Fixed the issue that auto finishing a mission on a chapter's ending may reset sub-missions to wrong states.
Fixed camera shakes on fall (They never showed in previous versions).
Fixed the issue that player can never get up again if fall down and roll into a river. (This was because the river has real physics and will carry the player foward.)
Fixed a bug that main menu will not show after selecting 'Cancel' on player death (If the game did quick loading before).