Specifically, complete the mission "The Langstrom Drive".
This standalone, arena-based mode supports up to four players. It consists of 30 floors of combat challenges with increasing difficulty, where teams must coordinate their unique abilities to survive. How to Unlock and Play Online GOTHAM KNIGHTS ONLINE(202)
The entire story campaign can be played in two-player online co-op. This mode features a seamless drop-in/drop-out system, allowing a second player to join or leave without interrupting the host's progress. Specifically, complete the mission "The Langstrom Drive"
Unleashing the Bat-Family: A Guide to Gotham Knights Online Gotham Knights brings the streets of Gotham to life through a cooperative experience where the Bat-Family—Nightwing, Batgirl, Red Hood, and Robin—must rise to protect the city following Batman's death. Whether you are tackling the main campaign or the intense Heroic Assault mode, the online components are central to the game's design. Gotham Knights offers two distinct ways to team up online: How to Unlock and Play Online The entire
Finish the "tutorial night" and access the Belfry (the heroes' base) for the first time.
Multiplayer is not available immediately; you must first reach a specific point in the story: