An awesome addition to a already awesome series.
I'm glad that the series has moved away from the traditional World War II theme that the previous games have followed. This change allows the game to feature more modern weapons, technology, and tactics.
I think we all were getting tired of the cliché WWII shooter, killing Nazis and crippling their regime. This time you face off against a more modern, and possibly more deadly, enemy because they continuously and skillfully use to environment to their advantage, and it works very well. The AI is extremely intelligent and utilizes many modern and lethal tactics to come at you from all angles and directions. Fortunately your squad mates also utilize this feature. They advance, retreat, call out locations of enemies, and utilizing the right weapon for each situation. The is never a time where you feel that the AI will make a dumb mistake that will cost you your life.
The campaign this time around may follow the general storyline for most tactical shooters, but it still maintains a new and innovative feel. No part of the campaign feels repetitive and bland. There is constantly something going on around, there is never a time in the game where you can just relax and not have to worry about someone sneaking up on you.
The weapons this time around are a major improvement over the previous weapons in the series. This time around you can use night vision, silencers, and Anti-Tank missile launchers. You get many different types of modern automatic rifles also a wide variety of sniper rifles. Unfortunately the enemy also has some pretty awesome weapons in their arsenal as well. One good thing about that is that all you have to do is kill them and then you can pick up their weapons to use against them. The enemy arsenal ranges from AK-47's to RPG's, which seem to be very accurate.
One thing that the Call of Duty series has always been famous for is their multiplayer element. This time around I'm glad to say that it is extremely, for lack of a better word, awesome. The ranking system is innovative and constant, with the ability to raise rank mid-firefight. As you progress through the level you are able to buy new classes and weapons and, if you get high enough, a create-a-class system that allows you to create you own personal soldier.
The levels in multiplayer vary in look and feel, and I don't think that there is one that I don't enjoy playing on. They range from rundown urban environments to gritty, metallic ships, to abandoned nuclear launch sites. There are many different nooks and crannies for you to hide in (or be ambushed from).
One great new multiplayer feature is rewards that are awarded for scoring multiple kills in a row. Some of the rewards range from a helicopter gunship that will fly around shooting your enemies, to strategic missile strikes via fighter jets.
Overall this game is extremely good. This is the sort of game that you could play very often and not get bored of it. The many new feature, levels, and weapons lend the game a fresh and modern overall feel to the game.