![Keith Silverstein on Twitter: "My #FlashbackFriday offering this week: Lex Luthor from #BatmanArkhamknight #LexLuthor #Batman This was an easter egg within the game. https://t.co/h1FYtyU0tZ" / Twitter Keith Silverstein on Twitter: "My #FlashbackFriday offering this week: Lex Luthor from #BatmanArkhamknight #LexLuthor #Batman This was an easter egg within the game. https://t.co/h1FYtyU0tZ" / Twitter](https://pbs.twimg.com/ext_tw_video_thumb/873297092155854848/pu/img/mlRL8naG5ty3rBrE.jpg)
Keith Silverstein on Twitter: "My #FlashbackFriday offering this week: Lex Luthor from #BatmanArkhamknight #LexLuthor #Batman This was an easter egg within the game. https://t.co/h1FYtyU0tZ" / Twitter
![Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com](https://guides.gamepressure.com/batmanarkhamknight/gfx/word/428871796.jpg)
Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com
![Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com](https://guides.gamepressure.com/batmanarkhamknight/gfx/word/428871812.jpg)
Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com
![Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com Riddles in the Arkham Knight HQ | Collectibles - Arkham Knight HQ - Batman: Arkham Knight Game Guide & Walkthrough | gamepressure.com](https://guides.gamepressure.com/batmanarkhamknight/gfx/word/428871781.jpg)