There have been many super heroes who have saved the world. What about try it from opposite side? Being an antihero who does not help. Become someone who destroys everything and kills guardians of the law. That's exactly Harley Quinn. Help Harley destroy the city. The game gives you every round a task that you have to accomplish. Get rid of all the cops and make a mess in a city. Make city falls into the chaos. For killing, you get the money for which you can unlock a new character. Make a mess in the city and become the biggest villain. Have fun.