Call of Duty: Modern Warfare II Campaign Difficulty Explained. The game has five difficulty settings: Recruit, Regular, Harneded, Veteran, and Realism. "Recruit" is for Call of Duty beginners or people that just want to enjoy the story. "Regular" is your baseline difficulty setting, not too easy but not too hard.

It is common knowledge that using a mouse and a keyboard naturally allows for more precise movement and controls, which, in most cases, gives PC players an advantage over controller players. So when it comes to Modern Warfare 2, console players may be inherently faced with a more challenging experience.