/// REQUIREMENTS ///

- Red Hood DLC

- Console.txt

/// INSTRUCTIONS ///

(If you already have a Console.txt, skip to Step 3.)

STEP 1

Go into Windows > Program Files (x86) > Steam > steamapps > common > Batman Arkham Knight > Binaries

Create a text document inside of the Binaries folder and name it Console. (The Binaries folder, not the Win64 folder!)

STEP 2

Grab the BmInput file that's in the zipped file, and put it into any of your Arkham Knight DLC folders.

STEP 3

Put this Batentry code into your console and activate it:

start batentry?Game=BmGame.RGameInfo?ChallengeSource=Frontend_ARChallenge?Id=720?Start=Challenge720?Area=Bank_Large,Hideout_A3,Hideout_L1,Hideout_B2,Showcase_Characters_Deathstroke,DLCRedhoodDocks_A1?Players=Playable_Batman,Playable_JokerFPS,Playable_Catwoman0,Playable_DLCRedHood,Playable_Nightwing0,Playable_Joker,Playable_Azrael,Playable_Robin0?Chapters=8?Flags=gChallenge_NW_720,CH8_Hideout_Redhood_Chase

If done correctly, the game will teleport you to the Arkham Knight's hideout.  (There's also a possibility that you could be falling through the abyss, either way you should be fine.)

STEP 4

Remove the batentry code from your console, and replace it with the ridiculously long Deathstroke code.  After that's done, go back into your game and press F12 a few times, then pause and exit.  Now everything is ready to be used.  Enter an A.R. challenge.  When you spawn in, pause and restart and press F12 a few times while your screen fades to black.  When it restarts you should now be playing as Deathstroke.  Press F12 one more time once you've spawned in so that the moveset activates.