Enter the Gotham City Police Department and explore the Evidence Locker to see weapons and items confiscated from villains in previous Batman: Arkham series of games.
Start a new game and log into your WBPlay account by selecting "WBPlay" at the main menu.
Note: This requires v1.07 or higher. At the main menu or while playing the game, hold LT + RT and rotate the Right Analog-stick continuously in either direction until your character's head gets large. Repeat the code to disable its effect.
Throughout the game, many of the thugs Batman encounters will discuss other cities and heroes in the DC universe, including Metropolis, Bludhaven, Keystone and Central City. There are also several buildings owned by other DC heroes and villains.
Catwoman makes reference to having burgled Queen Industries, which is the large corporation owned by Oliver Queen - A.K.A. Green Arrow.
There are several billboards advertising vacation packages to Santa Prisca, which is the home country of the villain Bane. Many Militia members can also be heard referencing the South American country.
Other thugs reference the fact that Gotham beats out Keystone because you can at least see Batman coming, unlike The Flash, who hails from Keystone.
If you capture fourteen of Gotham's most ended at the end of the game, you'll get a different ending than you will if you settle for the mere seven that are technically required.
When in the GCPD, Batman can view the Evidence Locker, which contains weapons an gear confiscated by villains throughout Batman's adventures in Arkham Origins (note elsewhere also the references to the Blackgate Riots that took place during that game), Arkham Asylum, and Arkham City - all of which have voice recordings from Aaron Cash.
You can find Talia's sword in the Evidence Locker, and inspecting it will cause Batman to have a private moment of reflection.
Any additional enemies apprehended during the course of Arkham Knight will see their weapons and items added to the Evidence Locker.
Complete New Story + mode.
Successfully complete the game to unlock the "New Story +" option at the main menu. You will retain your WayneTech upgrades and experience points and will be play under the Knightmare difficulty setting. How to activate skins: Outside of DLC skins, some skins require you to do the following: before you can sign into an existing WBPlay account, you’ll need to create a free new WBPlay account on WBPlay.com. After receiving the character skin reward for signing in, if you are signed into your WBPlay account and you want to sign out of it, select WBPlay in the 'Main Menu' and choose the Unlink WBPlay Account option.
On New Game +, if you wait until the song that's playing is over, then start to burn the Joker, you'll get the secret alternate intro, with a new intro voiceover.
Consult the map of Gotham and travel to the coordinates 2208, 1851. You'll find a door you can enter to reach a room with a Gramophone playing a recording of the poem of Solomon Grundy.
Listen to the messages on Bruce's answering machine at Wayne Tower to hear several messages from Lex Luthor. Some thugs can be heard referencing Superman.
Superman has been one of Batman's best allies and greatest foes throughout his career as the "World's Greatest Detective." In Arkham Knight, many in-game items refer to the line between the Man of Steel and the Dark Knight.
Listen to Bruce's answering machine in Wayne Tower to hear several messages from Lex Luthor, who is interested in purchasing the Applied Sciences division of Wayne Enterprises - apparently Bruce has been avoiding his calls. Scattered all over Gotham are billboards for the mega-corporation that serves as the main infrastructure for Clark Kent's nemesis Lex Luthor. Several thugs can be heard lamenting the state of Gotham, adding that all it needs now is for a certain caped freak to come flying in.
Play through the Batgirl DLC (released as "A Matter of Family") until you reach a point where you head underground, shortly after rescuing two officers who were drowning. Look for a room with two boxes on top of each other. They have a "2008 05 15" label on them. This date is a reference to the date when the Dark Knight Coaster opened to the public in the Six Flags theme park.
In several areas of the game like Oracle's Clock Tower and Panessa Studios, posters can be seen for The Gray Ghost. This is a reference to the Batman Animated Series episode "Beware the Gray Ghost," where Batman must solve a crime spree reminiscent of an old TV show who's main hero (voiced by Adam West) operated much like Batman.
Various posters featuring The Gray Ghost can be found. This is a reference to the "Beware the Gray Ghost" episode of the Batman animated series.
Head to the train station located near Grand Avenue. Look around to find posters that advertise travel destinations. These include Keystone City (home of The Flash), Metropolis (Superman's home). Look closely at the artwork promoting those destinations and you'll see the heroes on display.
