Rescuing crew members in Gotham City is essential for complete progression in the Line of Duty side quest. Founders Island hosts some of the most heavily guarded firefighter locations, requiring a blend of stealth combat and Batmobile upgrades to clear. Understanding where to find each crew member speeds up your route to unlocking the final encounter.

Finding Firefighters in Northern Founders Island

The northern portion of Founders Island features tight urban quarters and high perches. One firefighter is trapped near the northern docks, where sniper cover makes a direct assault dangerous. Eliminating the long-range threat first allows Batman to drop down and defeat the remaining militia guards safely.

Another crew member is surrounded by armed enemies deeper within the construction district. Utilizing high vantage points helps you scan the group with Detective Vision before starting a Fear Multi-Takedown. Clearing these northern hostiles ensures safe evacuation back to the GCPD.

Locating the Underground Hostage Groups

Not all targets are exposed to the open skyline on Founders Island. One elusive firefighter is located deep below street level in an underground structure. Accessing this area requires locating a specific wall paneling that can be pulled down using the Batmobile's winch mechanic.

Once the entrance is breached, players face a dense mob of enemies armed with shields and firearms. Sabotaging gun crates and using Disarm and Destroy abilities simplifies this heavy encounter. Careful preparation prevents unnecessary damage during this complex underground rescue.

Clearing Southern Docks and Port Adams

Port Adams at the southern edge of the island presents a massive predator-style setup. Firefighter Taylor is held in the central tower surrounded by patrolling thugs and technical equipment. Hacking nearby devices creates distractions, allowing Batman to pick off guards one by one.

Surrounding docks also contain smaller hostile groups guarding captured personnel. Using environmental hazards like explosive barrels or electric generators speeds up these close-quarter fights. Securing these southern sectors completes the basic firefighter rescue count for the island.

Unlocking and Defeating the Fire Chief Encounter

After saving all missing firefighters across Gotham's three main islands, the final phase activates. Fire Chief Underhill is held hostage at an unfinished high-rise building on Founders Island. This final rescue operates as an advanced stealth scenario featuring active sentry turrets.

Disabling the sentry dispensers and utilizing ceiling grates lets you thin out the guards systematically. Once the area is cleared, rescue Chief Underhill to transport him to GCPD and finalize the Line of Duty questline. Completing this objective yields significant upgrade points toward your endgame builds.