What collectible gameplay modifiers are available in Halo: Campaign Evolved? The answer is Skulls. These hidden collectibles alter the rules of a campaign playthrough, changing difficulty, player abilities, enemy behavior, weapon effects, or other gameplay conditions.
Skulls originated as gameplay modifiers in Halo 2 and later became part of Halo: Combat Evolved Anniversary. Campaign Evolved brings the feature into its remake of the original Halo campaign, reportedly offering dozens of Skulls—the largest collection in a Halo campaign to date. Players can seek them out during missions and activate them to customize their experience.
The effects range from challenging handicaps to deliberately humorous changes. The Grunt Birthday Party Skull, for example, makes a headshot trigger a burst of celebratory confetti. Other modifiers can reduce player advantages or randomize weapons, making familiar encounters unpredictable.
A common mix-up is confusing Skulls with Medals. Medals are rewards earned for accomplishing combat feats, while Skulls are collectible modifiers that change how the game plays.