As well as general exploration, there are numerous side quests available for you to complete. (cubedgamers.com)
Batman will also be getting help in the form of new gadgets (Bat Claw for grabbing hard to reach goodies) and new moves (projectile counter for bitch slapping thrown knives and pipes), which he'll need to combat the more varied enemies, more complex Riddler puzzles, and more numerous side quests. (thatvideogameblog.com)
Speaking of NPCs, there are also numerous side quests within the game. (playstationlifestyle.net)