This is story related and can not be missed. The achievement unlocked for me right after the choices menu appeared at the end of episode 5.
Sometimes achievements in the game do not unlock when they should. I recommend creating a copy of your save after completing chapter 5 ep 5 in case this happens. Otherwise you will have to replay the chapter from the beginning.
You can create a copy of your save from the main menu by:
1. Click Settings >> Saves
2. Press
on your save.
3. Select a different save slot to create a copy there.