Halo: Campaign Evolved has 42 Skulls in total. You can collect 39 across the 13 campaign missions, with exactly three Skulls in each mission. The remaining three unlock automatically as your collected-Skull total increases. Each mission also contains one Terminal.
All 39 Skull locations by mission
Use this as a mission-level collectible checklist. The list identifies which three Skulls belong to each mission; it does not invent unverified room-by-room directions. Open Chapter Select to revisit a mission when one of its three entries is still missing.
- Boarding Action: Malfunction, Johnny Ammo Seed, Leadhead
- The Most Dangerous Game: Temperamental, Recession, Ghost
- Heavy Burden: Eye Patch, Grunt Birthday Party, Efficient
- The Pillar of Autumn: Speed Limit, Magnified, Perspective
- Halo: Grunt Funeral, Give & Take, Floor is Lava
- The Truth and Reconciliation: Iron, Endurance Spec, Foreign
- The Silent Cartographer: Bandana, Acrophobia, Hip Fire
- Assault on the Control Room: IWHBYD, Angry, Cowbell
- 343 Guilty Spark: Fog, That's Just... Wrong, They Come Back
- The Library: Tilt, Pop, Famine
- Two Betrayals: Tough Luck, Black Eye, Mythic
- Keyes: Catch, Blind, Pinata
- The Maw: Stowed Reload, Boom, Thunderstorm
How the 42-Skull total works
The campaign places three collectible Skulls in every mission, producing 39 location-based collectibles. Three additional Skulls are progression rewards that unlock automatically after you collect enough of the location-based Skulls, bringing the full menu total to 42.
You do not need to collect every item in one uninterrupted playthrough. Chapter Select lets you return to a completed mission, and the mission display can be used to check what remains before starting another search run.
- 13 missions x 3 collectible Skulls = 39 location-based Skulls.
- 3 progression unlocks raise the complete total to 42.
- Every mission also has one Terminal, for 13 Terminals across the campaign.
Skulls, Campaign Remix, and LASO
Skulls are optional modifiers that change the rules or challenge of a campaign run. Campaign Remix is the broader replay system: official descriptions say it can combine different enemies, weapons, visual effects, and Skulls to alter familiar encounters.
LASO means Legendary All Skulls On. It is a specific high-difficulty challenge setup, while Campaign Remix supports a wider range of combinations. Neither is required to complete the standard 13-mission story.
A practical collectible route
Finish or select one mission at a time, note the three Skull names above, and check the mission's collectible status before moving on. Pair the run with that mission's single Terminal so you do not need a separate 13-level cleanup later.
For exact in-level directions, use the linked IGN or Polygon visual walkthrough and confirm landmarks against your current checkpoint. Routes can be difficult to communicate reliably without matching screenshots or video, so this page keeps the checklist concise and source-backed.
Frequently asked questions
How many Skulls are in Halo: Campaign Evolved?
There are 42 Skulls in total: 39 collectible Skulls across 13 missions and three additional Skulls that unlock automatically through collection progress.
How many Skulls are in each mission?
Each of the 13 campaign missions contains three collectible Skulls and one Terminal.
Can I return for a Skull I missed?
Yes. Use Chapter Select to revisit the mission and collect a missed Skull instead of restarting the entire campaign.
Is Campaign Remix the same as LASO?
No. LASO is a Legendary All Skulls On challenge. Campaign Remix is a broader replay system that can combine enemies, weapons, effects, and Skull modifiers.