Campaign Complete: Legendary (Halo 3: ODST achievement)

From Halopedia, the Halo wiki

Campaign Complete: Legendary is an Achievement in Halo 3: ODST. It is awarded when the player has completed the game on Legendary and unlocked the Dare character for use in Firefight. It is worth 100 Gamerpoints.^[1]

It is represented by the appropriate difficulty shield, except instead of two Combat knives and an Elite skull, there are two M7 SMGs and a human skull.

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	Achievements in Halo 3: ODST _Source
Campaign	Tayari Plaza • Uplift Reserve • Kizingo Boulevard • ONI Alpha Site • NMPD HQ • Kikowani Station • Data Hive • Coastal Highway • Campaign Complete: Normal • Campaign Complete: Heroic • Campaign Complete: Legendary • Listener • Tuned In • All Ears • Audiophile • Tourist • Heal Up • Junior Detective • Gumshoe • Super Sleuth • Wraith Killer • Both Tubes • Laser Blaster • Dome Inspector • I Like Fire • Naughty Naughty • Good Samaritan • Headcase • Trading Down • Dark Times • My Clothes! • Boom, Headshot • Pink and Deadly • Ewww, Sticky • Stunning!
Firefight	Be Like Marty • Firefight: Last Exit • Firefight: Chasm Ten • Firefight: Windward • Firefight: Lost Platoon • Firefight: Crater • Firefight: Rally Point • Firefight: Alpha Site • Firefight: Security Zone
Vidmaster Challenges	Vidmaster Challenge: Classic • Vidmaster Challenge: Deja Vu • Vidmaster Challenge: Endure