Who lived in youre ending? On my first playthrough everybody was alive and the french robot even returned to save the day. Depending on different variations of trust levels, you can get betrayed by Bo and different characters can die saving Faye. If Cain returns he takes the bullet for Faye and because hes a robot he lives and nobody dies. If Bo doesnt betray you but Cain doesnt return he takes the bullet and dies. If Bo betrays you and Cain doesnt return, Rachel takes the bullet and dies.
And that after credits scene. f**king awesome.