Coming from a Arkham Asylum/City base, the Dark Knight here seems a tad too slow-moving in comparison.
Granted, the armour will do him good when the bullets start flying but also slows his movement down and in my humble
opinion, standing in the open long enough to be shot at isn't really the "Dark Knight" style.
Also granted, I don't know how well a stealthy "take enemies out some at a time by striking out of ambush or by just appearing in midst of them"-
style of game would work on IHMN rules outside of specific pre-planned scenarios possibly taking place on several elevation levels so he's
able to swoosh around on rooftops and all that. That'd require him to have something to prevent his bones from being pulverized by all
the high jumps, though.
Meticulous Planning might also work since he's always seemed to have a knack for that plus it's a great way to separate henchmen from
each other...