Halo Campaign Evolved: All Bonus Mission Skulls Location Guide

The bonus missions in Halo: Campaign Evolved include their own hidden collectibles. If you want to 100% complete the campaign, you will need to find the 9 skulls spread across these three extra levels.

In this guide, we show you the exact location, corresponding section, and effects of all the bonus mission skulls in Halo: Campaign Evolved.

Bonus Mission 1: Boarding Action

During the first bonus mission, titled Boarding Action, you can collect three skulls distributed throughout its rally points.

1. Skull: Malfunction

• Section: Rally point Alpha.
• Effect: Upon respawning, a random element of your HUD will stop displaying.
• Location: After clearing the hangar at the end of this section, do not ride the elevator with Johnson yet. Look towards the edge of the platform and locate the door on the lower floor. Jump down there and cross that door to return to the starting room, but on an elevated ledge. You will find the skull right in the middle of the walkway.

2. Skull: Johnny's Ammo Tree

• Section: Rally point Bravo.
• Effect: Upon reloading, you lose the remaining ammunition left in the discarded magazine.
• Location: In the large room containing a purple energy tube at the top, head towards the door at the back of the middle floor without following the tube. After crossing the hallway, you will reach the upper part of a room with enemies. The skull is in plain sight on the floor of a curved hallway.

3. Skull: Leader

• Section: Rally point Charlie.
• Effect: Headshots no longer deal extra damage or cause instant kills.
• Location: At the end of the rally point, after defeating the enemies and when Johnson activates the elevator, do not use it. Head toward the open door to the left of the elevator (where enemies previously emerged). Follow that path to find the skull at the end of a dead-end hallway.

Bonus Mission 2: The Most Dangerous Game

In the second extra mission, The Most Dangerous Game, you will find three skulls that require exploring the stage or completing specific actions.

1. Skull: Temperamental

• Section: Rally points Alpha, Bravo, and Charlie.
• Effect: Allies will attack you much faster if you kill one of them.
• Location: You must break the shield of a specific golden Elite holding an Energy Sword three different times without killing him, as he will flee after each encounter:
  1. Rally Point Alpha: After finding Williams in the wooded area, you will see him on an elevated ledge to the right.
  2. Rally Point Bravo: Near the bridge with the Wraith tank, in the building at the back.
  3. Rally Point Charlie: Upon exiting the cell building into the outer courtyard, look at the elevated platform on the left.
     After breaking his shield across all three areas, the skull will appear in the center of the structure emitting the purple beam once the battle ends.

2. Skull: Recession

• Section: Rally point Bravo.
• Effect: Each shot consumes twice the usual amount of ammo.
• Location: In the bridge area with the Wraith tank, before crossing, look to the right for a closed door flanked by two pillars holding purple fire barrels. Shoot the barrels to detonate them and open the door. The skull is located on the ground inside the garage.

3. Skull: Ghost

• Section: Rally point Delta.
• Effect: Enemies no longer flinch when taking damage.
• Location: After surviving the Banshee attack and crossing the bridge, you will reach a new area. The skull is sitting on top of one of the purple fire pillars next to the large entrance door. Climb up the rock wall using the boulders located next to the tree with purple leaves to reach it.

Bonus Mission 3: Heavy Cargo

The third and final bonus mission, Heavy Cargo, hides its three skulls in platforming sections and elevated structures.

1. Skull: Eye Patch

• Section: Rally point Alpha.
• Effect: Disables auto-aim for all weapons.
• Location: Advance through the initial rooms until you reach a bridge filled with enemies. Before crossing it, take the door on the left leading to the side walkway. You will find the skull on the ground at the end of this walkway, near a locked door.

2. Skull: Grunt Birthday Party

• Section: Rally point Bravo.
• Effect: Headshots against Grunts trigger festive celebrations.
• Location: While heading to the hangar to meet Williams, you will cross a three-level room. The skull rests on top of a rocky pillar surrounded by yellow leaves. Jump to the central platform on the second floor and use the purple fire pedestal to climb onto the pillar.

3. Skull: Efficient

• Section: Rally point Charlie.
• Effect: Enemies killed while you maintain maximum health will drop more ammunition.
• Location: While riding the transit platform, activate its power to resume movement. As the doors open revealing enemies on the left stage, jump onto that platform when transit gets close enough. Head to the far corner next to the locked door to find the skull.

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