Complex sentence: The single-player campaign is focused on first-person shooter video games such as Call of Duty and Medal of Honor, and it takes 5 to 10 hours to finish the game, all depending on the player's experience.
Split into simpler sentences: The single-player campaign features many elements found in many other first-person shooter video games, such as "Call of Duty" and "Medal of Honor". It takes 5 to 10 hours to finish the game, all depending on the player's experience.