This achievement will pop after you have a discussion and go through the red portal.
Forgive me for being vague, but I do not wish to spoil the story.
ATTENTION: Make sure you play this game connected to the internet, and with the windows 10 Xbox App open and active. If you do not have the app open, the achievement will be stuck at 100%/'Done! Unlocking', but will never unlock. To unlock the achievement, you must fulfil the requirement whilst the Xbox app is open.