This is the most epic thing you will play.
First off, the one thing I noticed first was that it had brought back an old video game style I had missed; That you have something to unlock other than achievements, such as getting intel to unlock cheats, or leveling in multiplayer, it gives you back that feeling off complete to shred with what you have obtained other than some achievement that says, "Hey I beat the Hardest level."
Secondly, about the multiplayer, its cool there is a ranksystem although there are several games that do that, but it gives it a meaning too, its nice to level then shoot someone in the face with your newly acquired sniper rifle.
And lastly, Campaign and multiplayer are both top-notch amazing, everyone and anyone who buys this will have a blast calling in airstrikes and choppers to mow down the opposition, its a game that was destined to PWN.