Polygon has published a guide detailing the locations of the remaining skulls and a terminal to find during the "Keyes" mission in Halo: Campaign Evolved, a mission in which players search a Covenant ship for the captured Captain Keyes. The guide is aimed at completionist players who want to collect all bonus items while progressing through the story, noting that some items require specific conditions or difficulty settings to appear.

The mission contains three skulls and one terminal. The "Catch" skull, found near a gravity lift, only spawns on heroic or legendary difficulty and requires reaching the lift within two-and-a-half minutes, with players warned that enabling other skulls can prevent it from appearing. The "Blind" skull is tucked beside a wraith vehicle en route to the shuttle bay, while the "Consumed" terminal sits beyond a room containing two hunters near the upper deck. The "Pinata" skull is obtained after finding Keyes, now transformed by the Flood, by meleeing the growth in his place four times once the ensuing cutscene ends.