Arkham Knight The Line Of Duty Complete Mission Walkthrough

10 August 2026 | 44

Tracking down missing municipal workers provides an incredibly immersive way to experience the open-world layout of Gotham City in Rocksteady's final Arkham trilogy entry. Many players choose to pursue the Line of Duty side mission early because it offers substantial upgrade points and unlocks a dramatic narrative conclusion involving the city's emergency infrastructure. Establishing a methodical search pattern ensures you can locate every trapped individual across the three primary islands without wasting hours gliding aimlessly through the rain.

Locating the Missing Crew on Bleake Island

Your investigation begins automatically during the early stages of the main story when the local authorities alert you to the disappearance of several firemen. Bleake Island contains the initial set of targets, who are typically surrounded by hostile militia squads armed with basic melee weapons. To secure these areas, you should utilize structural vantage points and execute silent takedowns to thin the enemy numbers before entering direct combat.

As you glide near the industrial docks and urban rooftops, listen closely for distant radio chatter or aggressive threats from thug clusters. Activating your structural scanning visor reveals tactical markers indicating where the victims are tied up under heavy guard. Clearing these early encounters quickly boosts your experience levels and provides crucial gear upgrades for tougher late-game battles.

Searching the High-Risk Zones of Miagani Island

Advancing across the bridges introduces more complex enemy compositions that require advanced crowd control tactics. The targets hidden throughout Miagani Island are frequently guarded by armored brutes and tactical leaders who coordinate active search patterns. Engaging these specialized groups demands proper gadget allocation, such as utilizing remote electrical blasts to temporarily disarm high-threat targets.

Many of these locations are nestled within deep alleyways or behind large billboard structures that obstruct standard line of sight. Players can simplify the tracking process by monitoring local police dispatches that occasionally announce exact coordinates for active kidnappings. Approaching these skirmishes from the shadows allows you to execute fear multi-takedowns to instantly neutralize the majority of the threat.

Rescuing the Final Victims on Founders Island

The remaining crew members are stationed throughout the heavily fortified district of Founders Island, which features the most dangerous enemy configurations. Here, the captives are often surrounded by automated gun turrets and heavily armed combatants carrying tracking devices that detect structural scanning signals. Disabling the mechanical defenses with your remote hacking tool is essential before attempting to engage the ground troops safely.

Navigating this final sector requires a balanced mix of aerial traversal and tactical stealth to avoid alerting nearby drone patrols. If you struggle to locate the remaining targets, completing secondary militia assignments will gradually clear the regional radar and reveal hidden clusters. Once the fourteenth firefighter is successfully untied, you will receive the final coordinates to confront the mastermind behind the entire scheme.

Confronting Chief Underhill and Completing the Quest

The narrative reaches its peak once the dark knight uncovers the dark connection between the fire department leadership and the ongoing citywide chaos. Tracking the final signal leads you to a isolated warehouse district where the missing chief is being held under extreme security conditions. Resolving this final encounter requires defeating a massive wave of martial artists and weapon-wielding brawlers in a confined arena.

After neutralizing the immediate threat, escorting the rescued commander back to the central police precinct officially closes the case file. This comprehensive resolution delivers massive progression points and provides deep narrative context regarding the city's institutional corruption. Standard digital guides offer excellent breakdowns, but maintaining high mobility remains the absolute key to completing the mission successfully.