It’s been a few months since the release of Battlefield 3. By now, many players have memorized each detail of every map, unlocked all their weapons and attachments, blasted away at the single player and co-op campaigns, and have driven or flown more miles in vehicles than can be counted. With boredom looking like a possibility to some players, the massive tank that is the Back to Karkand expansion pack busts through the wall like an armed-to-the-teeth Kool-Aid Man. This expansion is free to all owners of the Limited Edition, and is available for 1200 Microsoft Points, or $15, for everyone else. Load up your weapon of choice, and get ready for battle!