Instructions in game(when you click on the "campaign" thing). Campaign: destroy all covenant/floods in halo. activate the M.A.C. cannon to destroy the four-runner ship for good. Co-op: control room: find out all controls. When done, click on "next".

Tags: halo, chief, master, arbiter, scorpion, tank, wraith, banshee, specture, elite, flood, infection, forms, pelican, phantom

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