Halo: Campaign Evolved - A Comprehensive Guide to All 39 Skull Locations

Halo: Campaign Evolved, a faithful remake of the original 2001 shooter, introduces a wealth of new content, including 39 collectible Skulls. These Skulls, when activated, offer unique gameplay modifiers that can drastically alter the experience, from disabling sprint to increasing enemy health. Three additional Skulls are also unlockable via the Campaign Remix mode, which becomes accessible after finding three of the hidden Skulls.

This guide details the locations of all 39 Skulls, organized by their respective campaign missions. These Skulls can be activated when starting a mission from the New Game option in the main menu.

The Pillar of Autumn

Speed Limit: In the cryo chamber room at the start, jump on the barrels in the back left, then onto the catwalk. Walk to the end to find the Skull. This Skull disables sprint.
Magnified: In the weapons locker room before reaching the bridge, locate the first set of lockers in the center of the room. The Skull rests on top. This modifier changes weapon magazine sizes to 60 rounds.
Perspective: After receiving the Magnum on the ship's deck, turn around and head back towards the pilot seats at the front of the ship. The Skull is located underneath them. This changes the Assault Rifle's magazine size to 60 rounds.

Halo

Give & Take: During the section with three marine lifeboats, follow the river in the main area between these sections until you enter a cave. The Skull is in the center, on a rock next to the river. This Skull causes firing your weapon to drain your shield, while damaging enemies recharges it.
Floor is Lava: In the area where you defend the marine lifeboats, find the smaller rock formation below the main grassy hill, overlooking the pod landing site. Jump down to collect the Skull. This Skull inflicts continuous damage when touching the ground.
Grunt Funeral: At the marine lifeboat area with the underground section near a cliff edge, ascend the main metallic spire, then jump over to the next part of the spire where the Skull is located. This Skull causes Grunts to explode upon death.

The Truth and Reconciliation

Iron: Near the grav lift leading into the ship, look for a small white light on the ground at the far end near the cliff. The Skull rests on the cliff edge. In co-op, death returns you to the last checkpoint; solo play restarts the level.
Endurance Spec: In the ship, after opening the door for the marines, enter the second-floor room with two Wraiths below. Head to the far corner of the upper walkway and use a purple box to jump to three pillars. The Skull is on the third pillar. This makes UNSC vehicles invincible.
Foreign: Upon entering the large hangar bay on the first floor, go to the back right corner where a locked door is located. Wait for the door to open, rush inside, and find the Skull on the ground. This modifier prevents the use of non-UNSC weapons.

The Silent Cartographer

Bandana: After driving the Warthog to the first interior section, proceed past the building to find a small cave just beyond it. The Skull is at the end of this cave. This Skull provides infinite ammo and grenades.
Acrophobia: After fighting Hunters in the above-ground arena, climb the central structure to find the Skull at its peak. This Skull allows flight when holding the jump button.
Hip Fire: In the main structure towards the end of the level, within the winding ramp section about one-and-a-half floors from the bottom, look down the center to find the Skull on a small shelf. This disables ADS and zoom on all weapons.

Assault on the Control Room

IWHBYD: In the early Scorpion section, cross the two thin bridges after emerging into an open-air area. Head towards the snow bank to the left, and use the Scorpion to jump into a small hole in the bank to reach the Skull. This modifier increases the frequency of random dialogue lines.
Angry: After the tank section, approach the door with three metal archways. The Skull is on top of the archway closest to the canyon walls. This makes enemies fire their weapons faster and more frequently.
Cowbell: After the Banshee bridge area, enter the large facility. Head to ground level and proceed up the center metal ramp. Using a vehicle or a grenade jump is required to reach the top, where the Skull is found on a stack of stones under the bridge. This reduces the mass of objects.

343 Guilty Spark

Fog: During the opening forest section, after crossing a long log, turn around and walk up the rocks. The Skull is located on top. This disables the motion tracker.
That's Just... Wrong: Inside the structure, after fighting Covenant, you'll encounter a marine. Killing him will drop the Skull. This increases enemy awareness.
They Come Back: At the level's end, do not head toward the evac point. Instead, go right when facing the large metal structure with Sentinels. Continue until you find a thin log between rocks; jump across it to find the Skull. This makes Flood enemies reanimated by the Flood more powerful.

The Library

Tilt: Early in the labyrinth sequence, after emerging from a tunnel to see Sentinels fighting Flood, run up the ramp to the right of your exit point. The Skull is at the top. This increases damage multipliers.
Pop: After the first elevator ride down, proceed forward. A Skull is located on a center pedestal on the opposite side of the door you must defend. Ramp up the side and jump across platforms to reach it. This causes Flood to explode when shot in their weak point.
Famine: Upon entering the fourth floor, a small hallway is directly in front. Take the first left to find the Skull on the ground. This halves the ammo of weapons dropped by enemies.

Two Betrayals

Tough Luck: After exiting the control room, grab a Banshee and fly to the top of the control room structure near the blue beam. Carefully exit the Banshee on the platform next to the beam to grab the Skull. This makes enemies go berserk and rarely run away from fights.
Black Eye: After riding the elevators down towards the second generator, you'll emerge into a canyon. Head across the arch to a small dead end made of Flood biomass. The Skull is on the ground in this dead end. Shields only recharge when you melee enemies.
Mythic: On your way to the second conduit, use a Banshee to fly upwards. Land on the middle tower, use the terminal to unlock a door opposite your objective, and fly over. After clearing three rooms of enemies, the Skull appears in the center of the final room. This increases enemy health.

Keyes

Blind: In the first vehicle bay after reentering the ship, find a hallway on the far end with a Wraith. Push through weapon boxes to reach the end of the hallway; the Skull is in the corner by the door. This disables the HUD and makes equipped weapons not appear.
Piñata: After getting the codes from Keyes, continuously melee his body until the Skull prompt appears. This causes enemies to drop grenades when punched.

The Maw

Stowed Reload: On the way to engineering, enter the cryo room. In the back left corner, near a large fire, the Skull is on a small platform. Jump from the broken walkway to grab it. This continuously reloads your stowed weapon.
Boom: In the engine room where you must blow up four vents, head to the right side and then to the second floor. Drop down from a small ledge beneath a platform to find the Skull tucked in the corner. This doubles the radius of every explosion.
Thunderstorm: During the Warthog run, enter a winding tunnel with shortcut tunnels. The Skull is in the center of the second shortcut tunnel. This upgrades the rank of most enemies.

Boarding Action

Malfunction: After climbing through the opening section, you'll reach a ramp leading to an area with two Hunters. After defeating them, instead of following Johnson, head to a ramp across from where you entered. Continue through unlocked doors until you reach a skinny bridge where the Skull is located. This removes a random element of your HUD upon respawn.
Johnny Ammo: Enter a large arena room with sand. After clearing Covenant, head up a ramp. On the second level, return to the previous room on the third floor. Clear the Elites to find the Skull on a curved ledge near a tree. When reloading, you discard any remaining ammo in your current magazine.
Leadhead: After progressing through the bio labs, you'll enter a small room with a vertical lift. Instead of going up the lift, head through the open door to the left of it to find the Skull at the end of the hallway. Headshots no longer deal extra damage or give instant kills.

The Most Dangerous Game

Recession: After linking up with marines, you'll enter an area with a long purple bridge and a Wraith. On the opposite end from the Wraith is a large door with two braziers above it. Blow up both braziers to open the door and reveal the Skull. Every shot doubles the normal amount of ammo.
Ghost: After crossing a large purple bridge where Banshees attack, you'll enter a small cave leading to an arena. After defeating the Covenant, return to the arena entrance door. The Skull is on a brazier above it. Use grenade jumps on nearby rocks to reach it. This makes enemies not flinch when shot.
Eye Patch: Progress through the ship until you reach a suspended bridge with a walkway. Instead of crossing the bridge, go through the unlocked door on the same side you entered the room. Follow it to a locked door; the Skull is on the ground next to it. This disables auto-aim on all weapons.
Grunt Birthday Party: While regrouping with marine survivors, enter a multilevel room. The Skull is on top of a rock formation with yellow foliage. A purple brazier on the second floor can be used to jump to the Skull. This makes Grunts explode in confetti when killed by a headshot.
Efficient: On the gondola ride near the end, you'll stop to restart power. In the second area after restarting, jump to the left platform considered "out of bounds" and run to the back right corner to find the Skull. This makes enemies drop more ammo when killed while at full health.