Disable the Founders Island Radar Network

Head to Panessa Studios: Make your way to Panessa Studios on Bleake Island. Take the elevator down to the lab.

Find Freeze Blast: Inside the lab, find the Freeze Blast gadget on a pedestal. This is an optional upgrade.

Continue to Batcomputer: Interact with the Batcomputer for your next objective.

Glide onto the Relay Drone: Travel to the objective marker, which is a moving Drone. Climb to nearby rooftops and glide down to land on the Drone. This may take a few attempts.

Upgrade Remote Hacking Device: Successfully landing on the Drone grants you the Drone Hacker ability, allowing you to temporarily blind enemy Drones.

Destroy the Arkham Knight’s radar network (1/2): Use the Drone Hacker to blind a nearby Drone. Fly to the rooftop it was guarding and use Explosive Gel on the computer console.

Destroy the Arkham Knight’s radar network (2/2): Go to the next objective marker. Set up on a crane overlooking the second tower.

Clear the Rooftop: Wait for a Drone to patrol near the tower. Use the Drone Hacker to blind it. You will have 60 seconds to drop down and defeat the Brute, four Combat Experts, and four soldiers guarding the rooftop. If detected, retreat and reapply the hack.

Disable Sentry Turret: After clearing the enemies, use the panel on the nearby wall to open a door below. Drop down, take cover, and use the Drone Hacker on the nearest Sentry Turret before disabling it.

Destroy Second Console: Approach the computer console and use Explosive Gel to destroy it.