This is the third story progression achievement.
*** Spoiler - click to reveal ***After completing Birdman’s dash and Nomad's control chip missions Noah will have another mission for you back at Zephyr Transit, called 'Back in the Game'. For this mission you’ll have to make your way to the Elysium Labs building at the far end of Centurian Yards, then make your way inside the building and follow your Beat Link to the objective. You may find your Beat Link gets periodically disabled – if this happens simply press the Right Stick to reactivate it when it becomes available again. Once you reach your objective continue on with the mission until you have to get out of the building. A new enemy type will be introduced here – you can try to take them on if you’re feeling up to it but it’s probably best to just keep running and do as little fighting as possible. Once outside the building you’ll need to run back to the Zephyr Transit Hub. The mission should complete when you make it inside the Transit Hub building but you should continue on up to your hideout to pop the achievement and finish the mission properly with a cutscene.