Thunderstorm - Achievement - Halopedia, the Halo wiki

Thunderstorm

[[Halo 3]]

Thunderstorm is a Halo 3 Campaign Achievement. It is earned when the player finds the Thunderstorm Skull. This Achievement gives 10 Gamerpoints to the player.

It is represented by a blue circle with a skull in the middle. The skull has a thunderbolt on its forehead.

Effect: "Field promotions for everyone!" -- Upgrades enemies to their stronger versions.

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Halo 3 Achievements

v • d • e Achievements in Halo 3 (list)

Campaign	Landfall • Holdout • The Road • Assault • Cleansing • Refuge • Last Stand • The Key • Return • Campaign Complete: Normal • Campaign Complete: Heroic • Campaign Complete: Legendary • Marathon Man

Meta-game	Guerilla • Demon • Cavalier • Askar • Exterminator • Ranger • Vanguard • Orpheus • Reclaimer

Campaign skulls	Iron • Black Eye • Tough Luck • Catch • Fog • Famine • Thunderstorm • Tilt • Mythic

Mythic Map skulls	Assembly Skull • Citadel Skull • Heretic Skull • Longshore Skull • Orbital Skull • Sandbox Skull

Multiplayer	Graduate • UNSC Spartan • Spartan Officer • Two for One • Too Close to the Sun • Triple Kill • Overkill • Lee R. Wilson Memorial • We're in for Some Chop • Killing Frenzy • Steppin' Razor • Mongoose Mowdown • Up Close and Personal • Fear the Pink Mist • Headshot Honcho • Used Car Salesman • MVP • Maybe Next Time Buddy

Legendary Map multiplayer	Look Both Ways • Road Rage • Flag Dropped • Defend This • Came... From... Behind • Alas, Poor Yorick • Double Double

Mythic Map multiplayer	Hammer Time • Blades of Fury • Ghost Patrol • Post Mortem • ... Get the Horns • Awww, Too Bad • Killtacular • Have Fun Respawning • Save This Film • Delicious Brains • Zombie Repeller • Tank Dropper • Pull!

Vidmaster Challenges	Vidmaster Challenge: Lightswitch • Vidmaster Challenge: Annual • Vidmaster Challenge: 7 on 7 • Vidmaster Challenge: Brainpan

Thunderstorm (achievement)

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