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

Complete one combat challenge without taking damage (any character)

Stop the phone booth killer

Reunite the separated couple

Destroy it all

Collect enough evidence to locate the gun for hire

Don't look down

Fight for survival

Find someone to play remote Batarang catch with

Assassinate fifty enemies.

Reach combo level 40.

We are legion

Complete Memory Sequence 2.