Your family was murdered in cold blood, and you alone survived. Vengeance is sweet, like the siren song for massed combat. You are at the vanguard for a war, and your decisions could impact the rest of the galaxy for centuries to come. Under manned and under gunned, you must fight through unimaginable odds to win. Using guerrilla tactics, and salvaging supplies and 'mechs you lead a determined group of rebels to fight off the attackers of your home world.
Nothing is sweeter than victory.
MW4 can challenge even the most seasoned of 'mech pilots yet at the same time is very easy and fun to learn. You get a true feel for just how mammoth your 'mech is as you stroll down a street, stomping on vehicles, uprooting trees, and demolishing anything that gets in their way. But nothing compares to jumping off a high mountain, then using jump jets to land on an enemy 'mech. The sound of 50 tons of raw power crushing down is almost indescribable. Nothing survives and if you're unlucky enough neither do you.