Life After Death achievement in Batman: Arkham Knight

How to unlock the Life After Death achievement in Batman: Arkham Knight: Achieve 21 Stars in AR Challenges using the Original Arkham Batmobile

I did everything for the achievement bit it won't pop. Any ideas? : r

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Did Batman (Bruce Wayne) survive at the end of Arkham Knight? - Quora

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Batman: Arkham Knight Achievements

Batman Arkham Knight - All Snug in Their Beds Achievement Guide

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Batman: Arkham Knight - Wikipedia

It's done. every possible star, achievement, challenge, dlc and

Batman: Arkham Knight - First Person Mod Gameplay