Achieve 24 medals on predator challenges

Obtain 48 medals on the original Arkham City ranked maps (as Batman)

Retrieve your stolen goods

Complete one predator challenge by using only Silent Takedowns and without being detected

The joke's on who?

Clean up the Dry Docks

Find a way into the secret base

Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge

Zip Kick 5 different thugs

Rescue the fifth hostage from Riddler

Achieve 16 medals on combat challenges

Complete one combat challenge without taking damage