The Key

The Key

File:Mission 8 completed achievement.gif

Halo 3

The Key is an Achievement for Halo 3 on the Xbox 360.

It is earned when one finishes the campaign mission Cortana on the Normal, Heroic, or Legendary difficulties, and gives 40 Gamerpoints to the player.

It is represented by a blue plate with a roman numeral VIII on it.

Note: You must finish the level completely through, or the achievement will not unlock.

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

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