Batman and Catwoman Story Completed on Normal and Newgame plus unlocked.<br />
Catwoman DLC - Family Jewels - 40G<br />
Retrieve your stolen goods.<br />
You will Begin at the Courthouse and the enemy with your loot will have a glowing diamond on him when you use thief vision.<br />
Simply knock him out in any fashion to retrieve it and fill the red bar under your health and the achievement will unlock.