Halo Campaign Evolved skulls and where to find them

Skulls are collectibles in Halo: Campaign Evolved that can be used to modify your playthrough. Update (July 30): We've updated this guide with the locations of every skull in Halo: Campaign Evolved. All skull locations in Halo: Campaign EvolvedEach level in Halo: Campaign Evolved has three hidden skulls to collect (and one terminal). Follow the links to each individual level below to learn where they are:Halo: Campaign Evolved skulls listSkulls in Halo: Campaign Evolved are essentially gameplay modifiers. Here is the full list of skulls in Halo: Campaign Evolved alongside their description: