Imagining Campaign. (Predictions thread)

Try to imagine what Halo 4’s campaign will be like, the way it looks and plays in your mind, the things you expect the world to have in it. Think about the animals, the vistas, the fighting, and everything else about the setting. This is your Halo dream game. What 's it like?

I want to check this thread again after the game comes out to see who came the closest to describing the actual game.