It's hard to believe that it's been two and a half years since the last Advance Wars game came out for the Nintendo DS. Since Dual Strike hit the scene, the DS has caught on in a huge way, so the time was apparently ripe for a sequel to emerge, and so it has with Advance Wars: Days of Ruin.
This new Advance Wars title takes place in a world that's been ravaged by a massive meteor strike. As the survivors struggle to rebuild their civilization, they're beset on all sides by madmen convinced that the time has come for them to control the world. It's up to the player to guide the forces of good until you manage to triumph over all the evil in the world.
Days of Ruin makes some big changes to the classic Advance Wars gameplay, mostly in the ways that your CO units are used. No longer will you be able to choose the CO you wish to play on a map (at least, not in the main campaign); those are chosen for you automatically. CO powers are also used differently, in that you have to load your CO onto a unit and drive them around on the map, killing nearby units until their CO powers have fully charged up. Most CO powers are fairly small-scale compared to those in previous Advance Wars games, as well, making Days of Ruin much more about pure strategy than relying on a lucky CO power to win a game for you.
This guide isn't intended to be a comprehensive guide to everything in Days of Ruin, and there's a lot of content here for you to discover. Instead, this is mostly intended as a walkthrough for the game's 26 main missions. If you want to know more about multiplayer or the game's trial missions, check out GameFaqs.com.