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The Steel Mill in Arkham City.

The Steel Mill is a factory that was tied to Arkham City by Hugo Strange, and was a part of the Industrial District. During Batman: Arkham City, Joker used the Steel Mill as his main base of operations.

Before Hugo Strange built the mega-prison complex, it was the primary Base of Operations of Roman Sionis, AKA Black Mask, during the events of Batman: Arkham Origins.

Incident Report[]

Before Arkham Origins Incident[]

Before the Incident on Christmas Eve, Black Mask used the Steel Mill as a front for his drug lab that was hidden in the basement. It was known to be part of Roman's business Sionis Steel Works, which was known to have become defunct at some point. Eventually, the Joker arrived, took Roman's alter ego, took over the operation, and prepared his plans against the Dark Knight while he locked Sionis in his own office in the Drug Lab and extracted information from him through torture to learn more about his mannerisms and actions to perfect his disguise.

Arkham Origins Incident[]

The Steel Mill was Black Mask's base of operations for his crime syndicate. When the Joker kidnapped Black Mask, he took over his organization by impersonating him and hired eight assassins for a $50,000,000 bounty on Batman's head. When Batman discovered the truth at the Gotham Merchant's Bank, Joker imprisoned Black Mask at the Steel Mill. After he broke into the Steel Mill, Batman rescued Black Mask and beat him for information concerning the Joker. Sionis refused to divulge any information, because he had plans to kill the Joker.

Afterwards, Copperhead attacked Batman in Black Mask's Office which resulted in her poisoning him with her venom. During that, Black Mask escaped into the night. That was eight years before the events of Arkham Asylum, so there were no Joker decorations as seen in Arkham City. If one were to explore the Steel Mill after beating the game's main storyline, they would find Joker's Henchmen all over the place. However, if one were to do this during the main storyline, they would find members of Black Mask's Gang.

Arkham City Incident[]

As aforementioned, the Steel Mill was Joker's base of operations during the Arkham Gang War.

When Batman travelled to the Church to investigate a shot intended for Catwoman, he finds that it was remotely fired by Joker and follows the gun's signal back to the steel mill. When he gets there he finds it and the surrounding Industrial District is swarming with Joker's Henchmen. Batman enters the steel mill via one of its chimney's. When he is searching for Joker, he is knocked unconscious by Harley Quinn. Joker then explains that he is dying of the Titan Disease, and that he has shipped samples of his blood to hospitals in the Gotham area as well as giving Batman some diseased blood too, leaving him with no choice but to help Joker find Mr. Freeze so he can produce a cure.

Later in the story, Batman returns after Harley took the cure that Freeze manufactured in the GCPD. Batman has to get into the steel mill a different way than he did before, it is at this time he learns the truth about Protocol 10. With Protocol 10 activated, the steel mill is partially destroyed by TYGER. Joker nearly kills Batman who is incapacitated under rubble, however Talia al Ghul intervenes and offers Joker the eternal life in exchange for Batman's life. Catwoman soon turns up and rescues Batman from the rubble.

If Batman returns to the steel mill after Joker's death at the Monarch Theatre, the goons there will comment on recent events and when Batman pushes the button on the musical Harley heads, they have changed to her crying instead.

Harley Quinn's Revenge Incident[]

Harley Quinn used the steel mill as a hideout two weeks after Arkham City shutdown. The GCPD sent Batman in to smoke her out, but he disappeared for two days. Robin later went to find out what happened to the Dark Knight. It turned out that he was trapped in a small bubble with no air in it inside of a giant Joker robot.

Arkham Knight Incident[]

The building could be seen in the unaccessible Arkham City when it was seen from high ground. In addition, a drawn version appeared in the Wonderland side mission, with the second fight of the final segment taking place on its front entrance.

Rooms[]

  • Waste Exchange
  • Ventilation System
  • Loading Bay
  • Freight Elevator
  • Boiler Room
  • Assembly Line
  • Smelting Chamber
  • Cooling Tunnel - B
  • Cooling Tunnel - D
  • Manager's Office
  • Joker's Fun House

Enigma Datapack Locations - (Arkham Origins only)[]

Exterior of the Steel Mill: [3] Datapacks

Loading Bay / Loading Bay Depot: [3] Datapacks

  • Extortion File 10 - On the stairs leading to the office, behind a fence. Go to the Loading Bay Depot, up a flight of stairs and in the small alcove on the left. You'll find a Ventilation Grate that can be pulled off, then you'll crouch/crawl thru the vent and be able to collect the Datapack;
  • Extortion File 08 - On a steel rafter across the "Sionis Industries" Sign. Grapple up from Sionis' Office onto one of the rafters, then use the Batclaw to collect it;
  • Extortion File 08 - In the Loading Bay Depot, using Detective Mode, you'll find a destructible wall. Place Explosive Gel, detonate it and collect the Datapack.

Sionis' Office: [1] Datapack

  • Extortion File 08 - Behind a destructible wall. Spray Explosive Gel on the wall, detonate it and collect the Datapack.

Werehouse: [3] Datapacks

  • Extortion File 08 - Right under the stairs connecting the Warehouse to the Loading Bay. Drop from a railing and collect the Datapack;
  • Extortion File 09 - In a small room connecting to the Sewers. You'll need to hack the door open first with the code "COMP OUND", then you'll need to use the Glue Grenade to block off some steam pipes blocking the way;
  • Extortion File 09 - In a locked-off corner of the room with a Weak Window. You'll need the Remote Claw to anchor onto one of the points, then you'll have to slide thru the window and collect the Datapack.

Concealed Room: [1] Datapack

  • Extortion File 09 - Hidden behind an unpassable shutter door. You'll need to control the Remote Control Batarang for this. Throw it through the narrow opening on the top of the door, then redirect it to hit a button near the door. After doing that, slide underneath the shutter and collect the Datapack.

Hidden Facility Mainteneance: [1] Datapack

  • Extortion File 10 - Hidden behind a gated area. You'll need to grapple onto a broken pipe in the center of the room, then follow that pipe until you drop in the gated area. Hack the Panel with the Code "COMPL ICATE " and collect the Datapack.

Drug Lab: [2] Datapacks

  • Extortion File 09 - Right in front of the Entrance, on a Conveyer Belt. You'll need the Shock Gloves to activate the mechanism, then you'll be able to Batclaw the datapack;
  • Extortion File 10 - In a small lab on the Bottom Right of the minimap. You'll need the Shock Gloves to activate the Mechanism, then you'll be able to Batclaw the datapack.

Gallery[]