MOST WANTED: Gotham On Fire
Objective: Investigate reports of an arsonist loose in Gotham
Objective: The Bristol fire station is ablaze – Power up the fire suppression system to stop it spreading
When you arrive outside the blazing fire station, you'll notice a grab point on the front wall. Attach the Power Winch and rev the engine, keeping the needle inside the orange bar until it reaches the top and then maxing the revs, This will trigger the fire suppression system inside. It will also reveal the culprit of the arson, Firefly.
Firefly will soar out of the building above you and mock you for a bit before trying to escape by flying away. As soon as you regain control, put the pedal to the metal and follow him as fast as you can. The idea here is to chase Firefly long enough to exhaust his jetpack's fuel reserves (shown by a bar at the top right of the screen), slowing him down and allowing you to catch him. During the chase he will duck and weave between buildings and shoot spurts of flaming liquid onto the street below in an attempt to damage the Batmobile.
Dodge around these obstacles while keeping close behind Firefly. When his fuel is completely depleted, you will see a prompt appear for you to eject from the Batmobile to take Firefly down (AA – hold/ XX – hold). Bring him to the ground to complete the first instance of this sidequest.
Becomes available after completing Mission 13 – Destroy The Missile Launcher (when you gain access to Founder's Island for the Batmobile)
Objective: Gotham's fire stations are under attack from Firefly
Objective: The Cauldron fire station is ablaze – Power up the fire suppression system to stop it spreading
Your second encounter with Firefly is almost identical to the first, simply follow the instructions in the previous section to bring him down once again.
Objective: Gotham's fire stations are under attack from Firefly
Objective: The Otisburg fire station is ablaze – Power up the fire suppression system to stop it spreading
The last chase is a lot more difficult than the previous ones, with lots of turns and height changes. You will definitely need to use your afterburners to keep on Firefly's tail. Try and stick as close as you can behind him during this to ensure it is easy to keep him in your sights as it is easy to lose him amongst the buildings.
If you fail, just wait a while (five or ten minutes) and go back to the same burning fire station on Founders' Island. When you successfully chase him down and beat him up, you'll automatically send him to the GCPD lockup (by riding his stunned ass there apparently).