How old is Batman in the Arkham Games?
Lets find out Batman's age in the Arkham Universe. I'm taking a more realistic approach complete with overthinking things and adding a bit of science and logic.
During the INITIATION DLC we see Batman being trained in 3 martial arts styles (the names of the combat challenge maps - Taijutsu, Tokagure Ryu and Seishinteki Kyoyo). In addition to this he would have needed to know Krav Maga, Kyokushin Karate & Kickboxing in order to pull the moves he does in the game. More so he needs to learn forensics, IT, law and science. All these things take time if you were to look at them realistically.
Close-up of Batman's diploma from comics can be found here where you can make out he went to YALE - http://library.law.yale.edu/sites/def...