, producer Guillaume Voghel revealed more about the one life and no saves I Am the Knight difficulty, which opens up after players complete the game and then its New Game Plus mode.

"The main narrative arc and side missions last about 12 hours," he said, "and then you have all the collectibles. To get 100 per cent of that will take much, much longer. We have a new difficulty level, New Game Plus is coming back--that's really difficult--and when you're done with that there's I Am The Night mode--which is no saves and one life."

Voghel also confirmed that the game's Initiation DLC will offer a single-player campaign set in Asia, with Bruce Wayne training to become Batman.

"You play as Bruce Wayne learning to be a ninja," said Voghel. "That's a really cool one. Narratively there's some added content that will give players a little more background story."

Initiation will be included in

Part of the Initiation DLC will feature Batman proving himself to his teacher, Kirigi, who also trained Ra's al Ghul's League of Assassins.

"[But] it's not League of Assassins, it's ninja-related," Voghel added. "It's when he learned to be a ninja and learned those techniques. He goes to a monastery--custom content was created for the DLC. You'll be in Asia in the monastery. The team did a great job on that, it looks really good."

Batman: Arkham Origins will be released for Xbox 360, PlayStation 3, PC, and Wii U on October 25.