Batman Arkham Knight U Bahn Riddler. First, use the batmobile winch to pull out a concrete slat. Keep pressing the attack key for batman to deal damage to the riddler, which deprives him of a third of his health.
Wow, way to figure it out for yourself. I'm sure those numbers are a clue but i have no idea how to get the case open. The riddler’s goons are soft, and batman should make the most of their disloyalty.