Knightfall DLC on PC

Link:
https://drive.google.com/file/d/16roaTtrfUj_IkdBAjv8LQTE34Hcb8aVD/view?usp=sharing

1 - Download and Extract the Files.


2 - Go to the install location of the game.
Default is C:/Program Files (x86)/Steam/steamapps/common/Batman Arkham Origins


3 - Make a Backup of these files: (Recommended)
Online/DLC/257070/BmGame.ini
SinglePlayer/Binaries/Win32/steam_api.dll


4 - Copy and Paste the files in your Game Folder.

Either
1 - Delete and Install the game through Steam.

Or
2 - Replace these files with your backups: (You need to have done Step 3 in How to Install)
Online/DLC/57070
BmGame

SinglePlayer/Binaries/Win32
steam_api.dll

Delete these files:
SinglePlayer/DLC/250960

Singleplayer/Binaries/Win32/REVOLT.ini and REVOLT.dll

And you should be good to go.

(I am unsure if repairing the game with steam deletes the DLC and you can try that as well.)

Skins:
Classic TV series Batman
Knightfall Batman



Challenge Map packs:
Azreal does not protect
City on Fire
Venom Connection
Turning Point
No rest for the wicked