You stealth killed 50 or more Nazis.

You obtained your first silver perk.

You reached Paris.

You crashed Dierker's car.

You bested your opponents in the bar fight.

You inspired your first area of Paris.

Solve 55% of riddler challenges

Complete a combo of 20 moves (any play mode)

Defeat the giant Titan Ivy plant

String up one henchman and drop him to surprise a second (any play mode).

Solve 40% of riddler challenges

Defeat two Titan Henchmen at once

Capture and lock up Harley Quinn