Beyond lore, the Codex serves practical gameplay functions. Each Most Wanted mission features a Case File that tracks objectives, clues, and villain location. Players can revisit these files to strategize—for instance, learning that the Riddler’s trophies are linked to robot challenges or that Firefly attacks specific districts. The Codex also records collectible progress, reducing frustration for completionists.
"Still giving me the cold shoulder?" The Joker materialized in my peripheral vision, leaning casually against the rain-slicked stone, dressed in the suit he was buried in. He smelled of copper and ozone. "You know, you’re the one who let me out of the box. Well, my blood, anyway. Four pints of liquid crazy pumped right into your veins."
I turned away from the hallucination. I walked to the edge of the walkway, looking out over the burning city. The night wasn't over. Scarecrow was still out there. The city was still sieged. But the specter of the Arkham Knight had a face now.
Similarly, villain entries often reference past encounters from Arkham Asylum and Arkham City , creating a cohesive timeline. Penguin’s bio notes his continued smuggling operations despite losing his iceburg lounge; Two-Face’s entry describes his violent takeover of City Hall; and Harley Quinn’s file tracks her psychological unraveling after the Joker’s death. For longtime fans, these entries reward series loyalty; for newcomers, they provide necessary context without resorting to lengthy exposition. batman: arkham knight codex
"Three of them," Joker whispered in my ear, though he stood ten feet away, inspecting a discarded popcorn bucket. "Juggling pins. Let’s see if you can break a record without breaking a neck. Oh wait, your 'no kill' rule! How tedious. Just knock them out, then. The boring way."
The rain in Gotham does not wash things clean; it only makes the grime slicker, the shadows deeper. It had been six months since the Joker’s body was lowered into the mud, but for Bruce Wayne, the funeral had never really ended.
But the Arkham Knight wasn't the only ghost haunting me tonight. Beyond lore, the Codex serves practical gameplay functions
"You let him win," the Knight growled, gesturing vaguely toward the specter only I could see. "You let the Joker twist you. You could have stopped him a long time ago."
I looked up to the ramparts. The Arkham Knight stood there, his visor glowing a predatory red in the downpour. He dropped from the ledge, landing with a heavy mechanical thud that splashed mud onto my cape.
"Party time!" Joker shouted, dancing amidst the red dots. "Looks like the new kid wants to play 'Who’s the Real Batman.' Spoiler alert: It’s the one with the better toys!" "You know, you’re the one who let me out of the box
It allowed players to experience the game without needing to authenticate with Steam or WBPlay servers.
The hallucination was screaming now, desperate, clawing at Jason’s arm. But Jason couldn't see him. He only saw the man who had trained him, standing amidst the wreckage of a city that hated them both.