Grapple on to the beam that sits above the pit and spot the cracked wall nearby. Take remote control of the Batmobile and fire your cannon at the cracked wall to open a path. Back in black (er, I mean bat), swing across the gap and into the newly created hole in the wall.
Grab and pull out the left one first. Exit the Batmobile and use a Batarang on the ‘?' by the door to open it. Head inside and move to the right. Switch back to Remote Batmobile Control and this time grab the second anchor point and pull it out. As Batman you should now be able to nab the Riddler Trophy. BI Riddler Trophy 18. Map Co-ordinates
1. From the hallway you are in throw your batarang into a small window hole or port in to another room (look along the wall its there) 2. Once boomerang travels into the next empty room notice you will See an On/Off switch pass it by (you’ll come back to it) and fly out a glass window to the room across the hall 3.