Yep. Terrible campaign.

Hey OP it looks like you're confusing Halo 4 with Halo 3. Halo 3 is the Halo game where the first half is completely random and has no story. It's so random that you can remove the first half of the game and the story would still be the same. There's no focus to it and there's nothing to go by on what you objective is. You have to beat the level first to know what you were doing in it. Halo 4 on the other hand has a story from the start and level focus.