Call of Duty Modern Warfare features a dark, gritty, and realistic storyline that spans 14 campaign levels. There are no collectibles to find throughout the campaign levels, making for a smoother story telling and gameplay experience.
The campaign can be played on one of five difficulty levels: Recruit, Regular, Hardened, Veteran, and Realism. Realism difficulty is just veteran difficulty with limited HUD – the weapon information on screen. Video walkthroughs of each campaign level on realism difficulty are posted on YouTube with links below.