Halo 3 - the complete story

Level five:

The story: Ask anyone for their favourite moment in Halo history and one will probably pop up more than most: the introduction of the Flood. Lacking any real impact in Halo 2, Bungie are back in the terror game here, as Level 5 sees the destroyed city of Voi overrun with the parasitic mites, becoming FloodVoi. Is this what forces the Arbiter and Chief to team up?

The gameplay: Expect one of the most cinematic moments in the game, as two groups of soldiers led by the Chief and the Arbiter have to abandon their feud to combat the undead parasites swarming the city. It'll be a case of work together, or die together. Bungie will want to outdo themselves on every level, and odds are... er, they will.