The next part of the Riddler’s Most Wanted mission is a puzzle that can be found inside the Riddler garage on the street below the end of Penitence Bridge on Founders’ Island.
Ride the elevator inside the garage down until you exit into another puzzle chamber.
This puzzle is a Batmobile and Power Winch -centric challenge that is actually quite short when you understand what needs to happen, but can be tricky to pull off due to the multiple hazards and a bit of pinpoint gliding involved.
As you enter the room, you’ll see a large drain in the centre, with three anchor points around the outside numbered 1-3. Opposite the anchor points are ramps allowing the Batmobile to drive down into the drain. Inside the pit are three levels of rotating platforms covered in saw traps that will damage or destroy the Batmobile if they come into contact.
To begin with, you’ll want to attach the Power Winch to the anchor point 1 and then lower the Batmobile into the drain as far as you can go. Rotate the platform here so that the Batmobile ends up on the section of the floor with the green bat symbol. When in place, if you look directly across the drain, you’ll see that the green ring here now lines up with an opening behind.
Eject from the Batmobile and fly through the ring. Inside the room here, find and step on the pressure plate to lower the water level. Return to the Batmobile.
Have the Batmobile climb back up and out of the drain. This time you’ll want to attach the Power Winch to the anchor point 2 and then lower the Batmobile into the drain as far as you can go. Rotate the platform here so that the Batmobile ends up on the section of the floor with the green bat symbol. Again, once you are on the green symbol, look opposite and shoot the weak wall out from behind the green ring.
Eject from the Batmobile and fly through ring. Step on the pressure pad in here. This will lower the water level once again, but will also trigger a fight with a group of four Riddler robots that show up. Dispatch the lot of them before returning to the Batmobile.
Whilst still attached to anchor point 2, rotate the lower level’s platforms until the tile with the green bat symbol is located directly below the ledge leading to anchor point 3. At this point, have the Batmobile climb back up to the top.
This time you’ll want to attach the Power Winch to the anchor point 3 and descend into the drain with the Batmobile as far as you can go. Again, you’ll need to rotate the lower level so that the Batmobile ends up on the green bat symbol. We can then eject and fly through the green ring opposite.
In this area, turn the corner and activate the pressure plate to lower the water level one last time. Before exiting, switch to Remote Batmobile Control and use it to shoot the Sentry Turrets that have appeared in the hallway behind you.
With the tunnel clear, return to the entrance and glide to the small platform at the base of the drain. Step on the pressure plate here and note the lights on the wall up above. Switch between Catwoman and Batman to determine the correct pedestal (it’s still a green light on batman’s end). Head up and interact with the correct pedestal as Catwoman.