Halo: Campaign Evolved introduces more gameplay-modifying Skulls than ever before.
Featuring fan-favorite Skulls from other Halo titles along with new, raucous relics, your return journey through Alpha Halo boasts a whopping 42 Skulls to collect and use for entirely new Campaign experiences. Watch our Skulls & Campaign Remix trailer to learn more about Skulls and the all new Campaign Remix mode.
Halo: Campaign Evolved features 26 fan-favorite Skulls from previous Halo titles, plus 16 new game-changing Skulls specifically designed for maximum mayhem.
Challenge Skulls: Embrace an all-too-familiar sense of terror with the return of pain-inducing Skulls such as Black Eye, Mythic, Famine, Catch, Boom, Cowbell, Grunt Funeral, and more.
Arcade Antics: When in doubt, go all out. Throw a party with the return of beloved arcade-style Skulls such as Grunt Birthday Party, Bandana, Pinata, IWHBYD, Acrophobia, and more.
Brand-new Skulls: Wrap your head around 16 new Skulls formulated for pain, pleasure, and piquancy. Try third-person combat with the Perspective Skull, make every shot count with the “math murder” of Give and Take, or watch where you step with Floor Is Lava.
Classical Flair: Halo: Campaign Evolved introduces four new Skulls celebrating the ”classically evolved” combat experience. Slow your roll with the sprint-disabling Speed Limit Skull, eliminate aim-down-sights with Hip Fire, amp up your assault with Magnified’s 60-round AR magazine, or activate Endurance Spec to turn UNSC vehicles into indestructible, Covenant-stomping machines.
This is crania mania. Seek Skulls wherever they hide to instantly unlock their mission modifiers, and unlock all 42 to create endless possibilities in Campaign Remix.
If you’re new to Halo, Skulls are mysterious collectibles hidden throughout campaign missions that enable gameplay-modifying features once retrieved. All you have to do is find one and pick it up—if you can reach it, that is.
Once collected, each retrieved Skull unlocks a new pre-launch option to alter your experience in future missions with greater difficulty, additional perks, or arcade-style upgrades for added fun.
In Halo: Campaign Evolved, there are 39 collectible Skulls to be discovered across 13 missions, with three Skulls hidden in each of the ten original campaign missions, and nine more to find throughout new missions set before the events of Halo: Combat Evolved. Find any three* Skulls to unlock Campaign Remix and instantly earn three additional Skulls for even more altered antics. You can check out the complete list of skulls further in this blog.
*Updated to reflect correct number of Skulls required to unlock Campaign Remix on June 11, 2026
Collect any two Skulls in Halo: Campaign Evolved to unlock Campaign Remix, an all-new play mode that allows you to revisit and replay completed missions with randomized enemies, remixed weapon pickups, new visibility effects, and a grab-bag assortment of Skulltacular delights.
Upon unlocking Remix, the following three Skulls automatically become available for use in both mission playthroughs and Remixed campaigns.
Adaptation: Randomizes the enemy factions present in the mission.
Reload: Randomizes pre-placed weapons available in the mission.
Armistice: Enemy factions never fight one another.
When deploying a Remixed mission, you’ll also get to roll for a chance to experience one of two new visibility modifiers:
Spore Visibility: Level visuals are blanketed in heavy, Floodified fog.
Nightvision: Nightvision is always on.
Any time you play a Remixed mission, the Adaptation, Reload, and Armistice Skulls are enabled by default. You may then roll for a random visibility effect and an assortment of other gameplay-altering Skulls, with options to manually curate your experience.
The new Adaptation Remix Skull randomly replaces the enemy squads you’ll encounter during missions with new allotments of foes composed of different unit types or from completely different factions.
Because Adaptation is enabled by default, you’ll find missions populated with a surprising hodge-podge of enemies and allies in near infinite-variations. A surge of Elites or a troupe of Jackal snipers? A pair of Hunters or a gaggle of Spec-ops Grunts? Maybe you’ll find Flood combat forms where you were expecting Sentinels. You might even encounter brand new enemies from the Operation: Meteorite bonus missions. That’s Adaptation at work! When combined with the new Armistice Skull, these random adversaries put aside their differences and form a cohesive front against all do-gooders—meaning this inter-species army has its sights set firmly on you and your allies.
Another essential element in the Remix recipe is Reload, a Skull that randomizes all the weapon placements in your chosen mission for a Fiesta-style outing each time you play.
Don’t be surprised to find fallen UNSC Marines beside recently relinquished fuel rod cannons, or browse a Covenant weapon rack filled with sniper rifles. All the new armaments included in the Operation: Meteorite bonus missions – such as the Battle Rifle, Brute Spiker, Needle Rifle, and more – are now also fair game for your classic campaign playthroughs.
After selecting a completed Campaign or Operation: METEORITE mission to Remix, you’ll next be prompted to roll for a randomly assigned visibility effect, with options to adjust this selection to your taste. When you roll for a random visibility effect, there’s a chance you could see no difference, but it’s just as likely you’ll have to contend with one of two new visibility modifiers in a uniquely dangerous scenario.
Might want to close your mouth for this one. Spore Visibility smatters your visor with phlegmy Flood-flecks as you creep through the haze of Flood spores.
Get tactical, marines! The Nightvision modifier deploys an espionage-ready filter over your op.
Once you’ve chosen a visibility setting, you can then pick and choose additional Skulls to modify gameplay however you like, or roll for a random assortment of discovered Skulls until you find a perfectly curated menu of madness. Seek out Skulls. Collect the carnage. Remix and repeat. All this chaos is even better together – jump in with up to four friends for unpredictable shenanigans and legendary challenges.
Angry
Enemies fire their weapons faster and more frequently
Black Eye
Your shields will only recharge when you melee enemies
Blind
HUD and Weapons do not appear onscreen
Catch
Enemies throw and drop more grenades
Eye Patch
All auto-aim is disabled for all weapons
Famine
Weapons dropped by enemies contain half the ammo
Fog
Motion Tracker is disabled
Foreign
Players cannot use weapons from another faction
Iron
Dying in co-op resets you to your last checkpoint, dying while solo restarts the level
Mythic
Enemies have increased health
Recession
Every shot expends twice the normal amount of ammo
That’s Just… Wrong
Enemies have increased awareness of the player
Thunderstorm
Upgrades the rank of most enemies
Tough Luck
Enemies always go berserk, constantly dive out of the way, and never run away from a fight
Bandana
Infinite ammo and grenades
Boom
Explosion radius is increased by 2x
Ghost
Enemies no longer flinch when taking fire
Grunt Birthday Party
Grunt headshots produce legendary celebrations
Grunt Funeral
Grunts die in a blaze of plasma
Malfunction
Upon respawn a random element of your HUD no longer appears
Piñata
Punching enemies makes them drop inert grenades
Cowbell
Physics mass of objects is reduced, making them more easily displaced
They Come Back
Flood Combat Forms reanimated by Infection Forms are much more dangerous
IWHBYD
It would have been your dialogue
Tilt
Enhances both positive and negative damage multipliers.
EX: Plasma does MORE damage against shields, but LESS damage against health
Acrophobia
The Corps: Now issue rifles AND wings…
Speed Limit
Take your time, enjoy the sights! Disables sprint
Pop
Shooting Flood in their weak point causes them to explode
Endurance Spec
UNSC vehicles cannot be damaged
Give & Take
Firing your weapon drains your shield, but dealing damage to enemies recharges it
Stowed Reload
Weapons continue to reload while stowed
Hip Fire
All weapon zoom functionality is disabled
Temperamental
Allies will attack the player more quickly if the player kills a friendly
Floor is Lava
Take continuous damage whenever touching the “ground”
Magnified
60-round magazines for the AR are now standard-issue
Johnny Ammo Seed
When reloading you lose the ammo remaining in the discarded clip
Leadhead
Headshots no longer provide extra damage or instant kills
Efficient
Enemies killed while the player is at full health drop more ammo
Perspective
Changes the player camera to third-person
Adaptation
Randomizes the enemy factions present in the mission
Reload
Randomizes the pre-placed weapons for the mission
Armistice
Enemy factions never fight one another