Mission 05 collectibles | Updated August 1, 2026

Assault on the Control Room Skulls & Terminal

Use this focused route for all 4 collectible locations in Assault on the Control Room: 3 hidden Skulls and the Tangent I Terminal.

Mission
05
Assault on the Control Room
Skulls
3
IWHBYD, Angry, Cowbell
Terminal
1
Tangent I
Checklist
4
Saved on this device
First stop
IWHBYD Skull
Last stop
Cowbell Skull
Route style
Interior detour / Terminal scan / Combat detour
Most careful pickup
Cowbell - High care
0 / 4 checked

Pickup order

Follow these four stops in mission flow.

Open a stop to jump straight to its route, image, and checklist control.

Visual route atlas

Match each stop by sight.

Preview the route landmarks before opening each detailed pickup card.

Walkthrough timeline

Four stops, image first.

A compact walkthrough lane for players who want the next landmark before the full card.

Quick table

Mission collectible table

Scan this mission's names, route types, and effects before following the image route.

CollectibleMissionRoute typeCareEffect / note
IWHBYDSkull05 - Assault on the Control RoomInterior detourModerateChanges combat dialogue.
Tangent ITerminal05 - Assault on the Control RoomTerminal scanQuickLore terminal
AngrySkull05 - Assault on the Control RoomCombat detourQuickEnemies fire their weapons faster and more frequently.
CowbellSkull05 - Assault on the Control RoomVehicle routeHigh careObjects have less mass and are displaced more easily.

Mission 05 | 3 Skulls + 1 Terminal

Assault on the Control Room collectible route

4 locations

Skull1 of 3 hidden Skulls in this mission

IWHBYD Skull

Route

In the open tank section with a narrow bridge over the chasm, clear the Covenant and cross the bridge. Turn left at the snowbank, climb onto the Scorpion, and sprint-jump into the small ice recess.

Effect
Changes combat dialogue.
Route type
Interior detour
Care level
Moderate
Video reference
14:20-16:20
IWHBYD Skull location in Assault on the Control RoomOpen frame
Location view
Show approach frame
Approach route for the IWHBYD Skull in Assault on the Control Room
Approach landmark | 14:20-16:20

Terminal1 Terminal in this mission

Tangent I Terminal

Route

In the large icy ravine used by the Scorpion, find the tall metal structure at the fork in the route. Enter from either side, go up the interior slope, and turn right.

Route type
Terminal scan
Care level
Quick
Video reference
16:30-18:45
Tangent I Terminal location in Assault on the Control RoomOpen frame
Location view
Show approach frame
Approach route for the Tangent I Terminal in Assault on the Control Room
Approach landmark | 16:30-18:45

Skull2 of 3 hidden Skulls in this mission

Angry Skull

Route

On the approach to the Control Center Ziggurat, locate the three metal arches in the valley beside the route forward. The skull is on top of the farthest arch.

Effect
Enemies fire their weapons faster and more frequently.
Route type
Combat detour
Care level
Quick
Video reference
18:50-19:20
Angry Skull location in Assault on the Control RoomOpen frame
Location view
Show approach frame
Approach route for the Angry Skull in Assault on the Control Room
Approach landmark | 18:50-19:20

Skull3 of 3 hidden Skulls in this mission

Cowbell Skull

Route

At the bridge where Cortana tells you to take a Banshee, look over the right edge. Drop onto the narrow slanted support and move beneath the bridge to the skull.

Effect
Objects have less mass and are displaced more easily.
Route type
Vehicle route
Care level
High care
Video reference
19:30-20:07
Cowbell Skull location in Assault on the Control RoomOpen frame
Location view
Show approach frame
Approach route for the Cowbell Skull in Assault on the Control Room
Approach landmark | 19:30-20:07

Cleanup plan

Before leaving the mission

Use this quick pass after the last pickup, especially in co-op or when you loaded from a rally point.

  1. Reach a checkpointAfter collecting a Skull or Terminal, continue until the next reliable checkpoint before quitting or changing platforms.
  2. Use mission selectMissed pickups can be cleaned up later. Open the mission route, jump to the nearest rally point when available, and follow only the remaining entries.
  3. Track by nameIf the game menu does not show a chapter-by-chapter tracker, compare the collectible names on this page with the names already unlocked in your profile.
  4. Confirm co-op creditIn co-op, have the progression owner lead the fireteam and verify the pickup registers before leaving the session.

Verification desk

Names, effects, and routes checked against released-game sources.

The mission route is independently rewritten around recognizable landmarks. Official Halo sources set the Skull names and effects; IGN, PowerPyx, PC Gamer, and Push Square provide additional route-order cross-checks.

Assault on the Control Room collectible questions

How many collectibles are in Assault on the Control Room?

Assault on the Control Room has 3 hidden Skulls and one Terminal, for 4 collectible locations on this page.

Can I return to Assault on the Control Room for missing collectibles?

Yes. Use mission select to revisit the mission, then reach a reliable checkpoint after collecting the missing item before leaving.

Do collectibles work in co-op?

Yes, but the fireteam leader controls the active mission state. Confirm the pickup registers before moving on.