‘Keyes’ skulls and terminal locations in Halo Campaign Evolved
Polygon provides a guide for collecting optional collectibles in the “Keyes” mission of Halo: Combat Evolved. The mission continues the game’s central narrative objective of rescuing Captain Keyes, who was captured by the Covenant earlier in the campaign. While progressing through a Covenant ship environment, players can discover three skulls and one terminal scattered throughout the level.
The guide highlights the “Catch” skull, which modifies gameplay mechanics by increasing enemy grenade usage—both thrown and dropped grenades become more frequent during combat encounters. Obtaining this skull requires players to complete the mission on at least Heroic or Legendary difficulty. To acquire it, players must navigate through enemy engagements and reach a gravity lift within the mission boundaries.
These collectibles serve as optional challenges for completionists and achievement hunters. Finding all skulls and terminals in the “Keyes” mission contributes to overall campaign completion progress. The guide provides specific location information for each collectible, enabling players to systematically gather them while pursuing their primary objective of locating Captain Keyes aboard the Covenant vessel.