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

Gain access to Arkham Mansion after it is locked down by the Joker

Survive the nightmare of the Scarecrow's fear gas

Solve 10% of Riddler challenges

Apprehend Scarecrow's senior commander.

Destroy all of the militia watchtowers.

Discover the Lazarus pit.

Survive the Militia onslaught.

Interrogate the Militia Lieutenant.

Gain access to the high security area.

Lock up Mad Hatter in GCPD.

Rescue Mad Hatter's first hostage.

Spin away an Extra Life.