Call of Duty: Modern Warfare campaign gameplay director Jacob Minkoff and art director Joel Emslie recently spoke to Kotaku (via XboxAchievements) about how the game's cast of characters will respond differently to you, depending on what you say and do.
'The story itself is linear, but in the context of the mission, if you go up to the line but you don’t cross it, what you will end up with is characters saying things like, "Dude, what did you just do? God damn it. I hope nobody hears about this,"' Minkoff said.
He added that if your actions are extreme, but somewhat understandable, 'your dialogue with your allies will branch.' He also explained that 'In some cases, their performances will branch, and they will call you out on it, and there will be other animated captured performances.'
Modern Warfare is aiming to capture life on the frontline, and as Minkoff says 'part of the reality of war is that there are people who face unpleasant events, and there is a portion – I’m really trying to work around spoilers – but what we don’t want to shy away from is the realities that some people face in war.'
Infinity Ward has already taken some flack for saying that the team is looking to depict a realistic version of war in Call of Duty: Modern Warfare (this Twitter thread from Dr. John Respectful is worth a read), and I'd imagine they'll continue to take criticism right up until launch.
Call of Duty: Modern Warfare is out on PC, Xbox One, and PS4 on October 25.