I’m not entirely sure what to make of the Modern Warfare 3 campaign. It’s not terrible but it’s also far from great – lacking any real big set pieces and at times feeling like it’s been assembled from a Warzone construction kit of pre-made pieces. About half of its 14 levels are open areas to explore (what Activision is calling Open Combat Missions), where you’ll find various multiplayer upgrades, gear, and weapons to help complete a few objectives scattered around the map.