Possible Endings

Kevin (hero)- Kratos tries to kill Raine so Kevin sacrifices himself to save her only the gamer doesn't see him die. The screen goes white and then we see Kevin and Raine abruptly together and happy (supposed to not make sense). Screen goes white again and we see that Kevin is actually dreaming and had been killed by Kratos. Game ends with Raine crying over Kevins dead body.

Kratos- Kevin saves the day and proclaims that their work is finished. But Kratos replies that only one can be the best and that he must fight Kevin. Kratos kills Kevin and locks away Raine. The game ends as we watch Kratos cry in his sleep because he betrayed his friends.

Raine- Happy ending though I'm not sure how (either Kevin kills Kratos or she gets them to stop fighting)