So, you spend the whole game looking for your family (wife and daughter) during a zombie apocalypse. Every so often, you'll have a dream where you are in a park and there's a small child running from you, or you're trying to enter your house but can't get through the door.
At the end of the game, your with the last survivor from the group, and she asks you to kill her as she 'can't go on like this any longer'. This triggers a memory, and you are able to finish the dream, opening the door to your house where your wife asked you to kill her, so you kill her and your daughter. You blocked this memory out, and then spent a load of time trying to find them.
Then, he goes on a big rant about how he regrets doing it, and tells the survivor that she needs to 'fight for every moment of life' and 'not give in' and so on, he puts her on a ship and she sails away. Then, he turns around, and commits suicide by running into the oncoming zombies.[/quote]