Board Thread:Lords of Shadow 2/@comment-108.208.64.188-20140303021132/@comment-50.153.118.8-20150223224304

I don't think it ultimately matters what he saw in the mirror. The whole point of the LoS2 ending is that Gabriel was a pawn of forces he couldn't control (God, Fate, whatever you want to call it). By breaking the mirror Gabriel made a statement that he refused to be a puppet for the rest of his existance. His actions from then on are now ultimately his own to make.