well we can't do it all for you
you could say that can't understand Schofields words - doesn't matter as nothing he can say will halt the demise of man
The black and white filming shows there is no morality, consolation universal justice etc, or it also shows theres no inbetweens, no around it, it's black and white: man is responsible for his own downfall
Bleakness and despair is emphasised by long, overhead shots of wintry tundra etc
Glouc & Kent say: "the world shall so wear out to nought", "Is this the promised end?" or something like that
And then very import is Lears death, he falls off teh screen which indicates in death we are removed from our deeds in life, rendering our actions and exsistence pointless
And thats just off the top of my head, there's heaps of stuff
Hope that helps