Call of Duty Modern Warfare 3 Complete Guide: Walkthrough, Tips, Tricks, Strategies and more

Modern Warfare 3 is this year's Call of Duty, whether we like it or not. Call of Duty fans are Call of Duty fans, so they're going to play this year's game regardless. They generally have their own opinions about every tiny detail, and they're unlikely to be reading this.
Modern Warfare 3, however, has another ace up its sleeve: nostalgia! More specifically, it's laser-focused on reminding you of all the hours you spent playing the 2009 Modern Warfare 2. That is, of course, because all 16 of those maps have been remade for Modern Warfare 3, and they're going to be available on day one.
But 2023's Call of Duty is quite different from those heady days, and you probably need a little bit of a primer on how things work in this one. We aim to offer answers to the questions you might have in this guide.
Call of Duty: Modern Warfare 3 comes packaged with most of what you would expect from the series, though there are a few caveats here. We wish we had known some of these before diving into the game ourselves, so hopefully, the list below will better prepare you for your time with it.