411Mania:
The basic premise of the game is that you pick two-person teams of Joes to tackle each mission. You start with only Duke and Scarlett but others quickly get unlocked. Given the cover of the game, it should be no surprise to you that Snake Eyes, Ripcord and Heavy Duty are among them. If you're playing single-player, the AI controls your team-mate. Each character has their trademark weapon(s), with the right trigger firing the primary and B firing the secondary, which is normally more powerful. There are three classes of Joe: Commando, combat soldier and heavy weapons. Each has its strengths and weaknesses, and the range of weapons is fairly impressive. Duke and Ripcord are both combat soldiers, but Duke's primary is a constant-fire machine gun while Ripcord's fires in three-shot bursts. However, Duke's secondary is a fairly pedestrian grenade which does average damage, while Ripcord's is a drone turret that, frankly, rules the school. If you've chosen the wrong team, or need to change up for a particular section, some levels boast a teleporter which will allow you to swap out one Joe at a time.
