CHEATS: Batman Arkham City: Harley Quinn's Revenge

A Few New Tricks (Bronze) Use 5 different Quickfire gadgets in one fight as Robin
Battering Ram (Bronze) Shield Bash 5 different thugs
Bomb Squad (Bronze) Defuse all bombs in 3 minutes or less
Breaking and Entering (Bronze) Find a way into the secret base
Frequent Flyer (Bronze) Zip Kick 3 different thugs
How's It Hanging? (Silver) Clean up the Dry Docks
Lost Property (Bronze) Beat all the henchmen around Batman's utility belt
Party's Over (Silver) Destroy all Harley Balloons
Snap To It (Bronze) Snap Flash an unarmed thug, an armed thug, an environmental object, and a Titan
The Last Laugh (Silver) Beat the game