The Line of Duty is one of Gotham's Most Wanted side quest in Batman: Arkham
Batman: Arkham Knight - The Line of Duty: Fire Chief Location - IGN
The Line of Duty, Arkham Wiki
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The Line of Duty - Batman Arkham Knight Guide - IGN
So Destructoid gives Batman a 3.5/10 for epitomizing the kind of exploitative garbage that has steadily eroded so much faith in the so-called AAA gaming scene. : r/gaming
Batman: Arkham Knight Guide/Walkthrough - The Line of Duty
The Line of Duty - Batman Arkham Knight Guide - IGN