The Knightfall Protocol in Batman: Arkham Knight serves as the game’s ultimate secret ending, reflecting Bruce Wayne’s final step towards retirement from his life as Batman. This protocol is a carefully designed plan that allows Batman to stage his own death in order to protect both his loved ones and Gotham from the threats that come with his identity as the Dark Knight.

Summary of the Knightfall Protocol:

– What is the Knightfall Protocol?
It is Batman’s strategic plan for an irreversible exit from his vigilante role, whereby he fakes his own death. This maneuver is intended to safeguard those he cares for and instill hope in Gotham’s citizens that their protector has sacrificed himself for their safety. By leaving behind his cowl on the Bat-Signal, he symbolically passes the torch, indicating that he is stepping away for good.

– How is it activated?
The Knightfall Protocol is triggered after players complete a series of substantial objectives:
1. Capturing All Major Villains: Players must apprehend all 15 of Gotham’s Most Wanted criminals.
2. Completing Side Quests: This includes all tasks related to the Arkham Knight’s militia and specific missions such as capturing Deathstroke.
3. Collecting Riddler Trophies: All of the Riddler challenges must be resolved, showcasing the player’s commitment to clearing Gotham of its criminal elements.
4. Final Activation: Once all tasks are accomplished, players can initiate the protocol by visiting the rooftop adjacent to the Bat-Signal at the Gotham City Police Department (GCPD) and selecting the “Knightfall Protocol” mission objective.

Cinematic Conclusion:
Upon activation, a cinematic unfolds where Batman embarks on his last adventure. He places his cowl on the Bat-Signal before taking off in the Batwing towards Wayne Manor. In a dramatic turn of events, as Bruce returns to his home, it explodes, leading the public to believe that Bruce Wayne has perished. This concluding moment cements Batman’s departure and signifies the end of his vigilante career.

Significance:
The Knightfall Protocol is widely regarded as the “true ending” or “100% ending” of Batman: Arkham Knight. This ending rewards players who have thoroughly engaged with the game, emphasizing the depth of commitment needed to rid Gotham of its threats. It stands as a poignant reminder of the sacrifices made by the hero and the weight of his legacy, leaving a profound impact on the game’s narrative and character arc.