The terrain itself isn't too friendly either. The main campaign tells the story of a struggle between the civilised world (humans and High Elves) and the forces of Chaos (men corrupted by the evil influence of dark gods and the demons of said gods).
When Chaos gains control of an area on the strategic map, the territory there will start to become tainted, with barren grey land replacing green grass and trees and rocks twisting into nightmarish figures and faces. A cunning general could turn the features of this inhospitable landscape to their advantage.
Above: Mark of Chaos is epic and inspiring stuff
Then you've got the hero units. They're tough enough by themselves, but it's also possible to zoom in and get access to an array of powerful special abilities. While this micromanagement can decimate your opponents and inspire your side, it means you can't see a thing except for your immediate surroundings.
This is especially interesting in multiplayer, because it'll be indicated when and where other players are micromanaging. While they'll be causing total havoc, their limited vision means it'll be the perfect time to start a flanking manoeuvre or begin picking off their beast handlers or war-machine crews. With any luck, they won't figure out what's going on until it's too late to recover.
It's all looking remarkably sexy and should dispel all those painful memories of playing the tabletop games back when we were kids. Sticking your fingers together while assembling models and getting trounced by the Wood Elves of the fat, rich kid next door will soon be long-forgotten memories.