In Batman: Arkham City, there are Riddler challenges, which comprise of things like predator (stealth) and combat challenges. Combat challenges have a scoring system which tallies up your score based on things like the types of moves that you used and how many different moves and gadgets used. I may complete all rounds without getting hit and without losing my combo streak, but I still won't score as high as the top 10 or so. How are such high scores achieved?