If you play through the game’s end as Alester and choose the dialogue option “This child will live, in memory of Mors,” when Varys brings Jeyne’s child to the throne room, you unlock Alester’s second epilogue. Queen Cersei enters the throne room looking for the child she was promised.
You have other plans. You refuse to tell Cersei where the child is, and you’ve taken every measure possible to ensure she never finds the boy who could one day command the Crown.
Even as Cersei’s guards close in for the kill, you defiantly cry out, “Better to die than to be tainted!” The guards slay you, but you are no longer the queen’s pawn—you are the noble leader of Riverspring.