Batman™ Arkham Knight: Riddler Trial #2 - Balancing Act - Walkthrough

To start, drive the batmobile up the small ramp on the side until you reach the small green panel. Stepping on it will activate a block, but driving over the larger red panel further up will deactivate it. Therefore, drive up, and activate the block under the ramp to make it stay, and then exit the Batmobile and walk to the green panel, and use the Remote Control to drive across to the other side. Rejoin the Batmobile and activate blocks to lower the ramp all the way down, and lock it in place. Drive off the ramp and quickly activate the block on the far side to land on. Power the winch hook to light up the panel below to find the right key.