Defense Grid

When ready, head back to Bleake Island and go to the movie studios to scout Arkham Knight's forces. Enter the elevator in the Wayne Movie Studios and go to the Quarantine Cells. Interact with the Batcomputer to update your mission objective. Now head to Founders' Island to find the relay drone.

Once you found the drone, glide towards it and land on top of it to get the piece that you can use to upgrade your RHD. Equip your RHD and hack the nearby helicopter drone. Now head to the first radar and destroy it using your Explosive Gel before the drone regains its original function.

Now head to the next radar on top of Lex Corp. You have to defeat all the guards on the surface first before you can head inside where the radar's console is kept. After defeating all militia guards, rewire the console nearby and open the door downstairs. The room has sentry guns as well. Use your RHD to temporarily blind them. Destroy both of them then destroy the radar controls. Now you have to destroy the long-range missile launcher.

Head there are clear all the guards. You can't destroy the missile launcher as is so you have to lower its shields first from the control room. Enter the room and access the computer. Now you have to remotely control the Batmobile and take out all the cobra tanks standing in your way. You have to carefully sneak around the patrolling Cobras and wait until you get a full lock-on before firing.

Once you destroyed all Cobra tanks, follow the GPS line to reach a ramp. Use the Power Winch to pull it up. Just in time, Arkham Knight and his strike force will arrive in the control room. Once you're in control, use the Fear Multi-takedown to defeat several targets immediately. After the cutscene, defeat all enemies in the control room afterward. Access the computer again then the control will switch to the Batmobile.

Pull the ramp as far as you can to lift it up. Back up a bit then use your afterburner to gain more speed for the ramp. Once you've reached the ramp, go up and destroy the missile launcher. Take note that the launcher will still fire missiles towards you so use your main and secondary guns to destroy the homing missiles and keep firing at the launcher until it is destroyed. Once done, you're free to call in the Batmobile in the district. New mission intel will become available as well.