Halo Campaign Evolved WikiHALOCAMPAIGN EVOLVED WIKI
English
Ctrl K
English

Halo: Campaign Evolved Thunderstorm Skull — Location & Effect

Find the Halo: Campaign Evolved Thunderstorm Skull location and route, then check its effect: Upgrades the rank of most enemies.

Thunderstorm skull icon

SKULL #40 / 42

Halo: Campaign Evolved Thunderstorm Skull effect: Upgrades the rank of most enemies.

How to find this skull

Mission: The Maw

Thunderstorm is during the final Warthog escape. Follow the main route until you enter the winding tunnels. Ignore the first opening on the right and the next opening on the left. After the following bend, take the shortcut tunnel on the right. Drive about halfway through it, get out of the Warthog, and look on the ground beside the burning debris for Thunderstorm.

Thunderstorm is found during the final Warthog escape.
Warthog entering the wrecked escape route near the end of The Maw
Stay on the main tunnel and ignore the first right and left openings.
Warthog driving through the winding escape tunnels
After the next bend, take the shortcut tunnel on the right.
Arrow pointing to the shortcut tunnel on the right after the bend
Halfway through the shortcut, get out and check beside the burning debris.
Thunderstorm skull circled on the ground beside burning debris

Other Skulls in The Maw

Sources

Last reviewed: July 24, 2026