https://www.gamepur.com/guides/can-you-save-anna-in-twin-mir...Play through the next section until Declan arrives. You have several dialogue options to make and, after many playthroughs, we’ve determined that it doesn’t matter what you select until Declan asks you why he shouldn’t just kill Sam and Anna. These next four dialogue choices are crucial. If you select anything else, Declan will shoot Anna before she can try to wrestle his gun away, and she dies later on. Pick these options to save her:
>>>
It’s not in your interest>>>
Take the evidence and go>>>
We’re both pragmatic>>>
It’s better for everyoneAnna will jump Declan and cause him to drop his sidearm. A fight breaks out, and Anna and Declan end up shooting each other. Declan falls to his death while Sam uses the emergency phone to call for help. The screen fades to black as it looks like Anna dies, but don’t worry. A radio presenter’s voice will start playing over the black screen, and the Master Negotiator achievement or trophy will unlock.