Batman: Arkham City Lockdown has several additional batsuits available. I've completed all the stages once, and am now going through them again. I expected to unlock one or all of the suits as I progressed, but that hasn't happened. I see that there's a Purchase button next to the suits, but assumed it works like WaynePoints: available for purchase if you don't have the patience to earn them. Do I have to purchase the extra batsuits? Or do they unlock at some point in the game?
Rocksteady did something very similar with Arkham City, so there's precedent for this as well.