Once you do the mainline quest and finish the game, depending on your performance, you get three endings: The good, the bad, and the ugly. You get the Good ending (Pure) if you finish the game with a Perversion score of zero. For the Bad ending, you must finish it with non-zero Perversion and be selfless (go right). I suppose from the perspective of Carceburg's people, this ending is simply divine. And as for the Ugly ending, finish the game with non-zero Perversion and be selfish (go left).