To unlock this trophy, you need to complete all of the Mysteriums that are scattered across the city. If you press the , then you will be able to check them all on the map. Each of the Mysteriums will challenge you in a different way. Some entail very specific objectives, such has throwing a certain number of foes from a roof within a time limit. You can attain Bronze, Silver, and Gold ratings on each one.

They look like this: