So the game is complete, as are most of the side quests, which I didn't really start delving into after the story was complete. The first two Riddler Hostages opened up, but the Third still hasn't popped. Also the Identify Theft missions don't seem to popping up any more either. All that is on my map are a bunch of trophies to hunt down. Oh, and there are like no enemies in the top right quadrant of the map, meaning I also can't find a Riddler informant to beat up to reveal trophies for those areas.
Reunited the Couple, Beat the Assassin, Stopped the Phone Calls, Political Prisoners Saved... but everything seems to have stopped now. Am I missing something? Do I need to do something?