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The Season of Infamy is a Batman: Arkham Knight DLC that was released on December 22, 2015. It includes 4 Missions with past villains: Mad Hatter (Jervis Tetch), Killer Croc (Waylon Jones), Mr. Freeze (Victor Fries), and Ra's al Ghul (Head of the Demon).

Missions & Overview[]


Release Date[]

December 22, 2015.


To Be Added...



  • The Scene of the Crime – Rescue Mad Hatter's first hostage.
  • Head Games – Rescue Mad Hatter's second hostage.
  • In Storybook Endings – Lock up Mad Hatter in GCPD.

Beneath the Surface[]

  • The Beast Beneath – Defeat the prisoners.
  • Breaking the Skin – Gain access to the high security area.
  • Evolution – Lock up Killer Croc in GCPD.

In From the Cold[]

  • Cold Case – Interrogate the Militia Lieutenant.
  • Out in the Cold – Track down the cryopod.
  • The Resurrection and the Life – Survive the Militia onslaught.

Shadow War[]

  • The Demon Lives Again! – Follow the Assassin's trail.
  • Daughter of the Demon! – Discover the Lazarus Pit.
  • Ashes to Ashes – End the League of Assassins' war.


  • These missions are not counted with the other 14 to activate the Knightfall Protocol.
  • This is the only Arkham Knight DLC to add extra side missions rather than standalone content like the Arkham Episodes.
  • The only villain to make a cameo in the original game is Killer Croc in a fear gas hallucination scene with him teaming up with Two-Face, The Riddler and Penguin. The other three villains in the pack were mentioned in Gotham City Stories.
  • Out of the four villains, Mr. Freeze isn't considered an antagonist. Instead, the Arkham Knight/Deathstroke/Arkham Knight's Militia play this role in In From the Cold.
  • After installing the DLC, extra areas show up, such as a different portion of the GCPD Building (which includes an Evidence Cabinet, another Interview Room and the Maximum Security West Wing) and the Elliot Memorial Hospital (previously inaccessible).
  • Oddly, even if one is to play the DLC after defeating the Arkham Knight, he may still shout orders when fighting the Militia when playing through In From the Cold.
  • Even if City of Fear isn't completed, The Joker's hallucinations don't appear in all four of the DLC missions.
  • The missions are partially inspired by Batman: Arkham Asylum, according to Rocksteady Studios.
  • After completing all four missions, there are still three empty cabinets left in the second Evidence Room.
  • In a way, most concepts from each villain are similar to their Animated Series counterparts.
  • Iron Heights Penitentiary and Mr. Freeze's ship can still be visited when the Cloudburst is set off. The player just can't continue the side missions until they continue City of Fear and clear the toxin.
  • The Shadow War mission is the only one in the Season of Infamy, and the second one along with the Heir to the Cowl mission in Arkham Knight, to have two different conclusions depending on the player's choice, making it unknown which of the endings is the canonical one.