bumping an old thread as I've only just got this game. Played through it once and managed to save the main characters apart from Kara (she sacrificed herself at the border to save Alice).
think I got the good ending? (public opinion was skeptical) although they are not accepted by the humans I did see the cutscene at the end between Hank and Connor.
Not sure I can really be bothered going through it all again or should I? Looking online there's loads of different endings for each character.
Where I think I did go wrong, is halfway through the game the policeman shot Luther in Roses house. I think that was a pretty big deal.