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Halo 3: ODST

Unlockables

Achievements

Complete each achievement to receive the allotted gamerscore.

UnlockableHow to Unlock
Find 15 Audio Logs, alone or with another ODST.All Ears (30)
Find all Audio Logs, alone or with another ODST.Audiophile (75)
In Firefight, finish a full round without killing a single enemy.Be Like Marty (10)
Get 10 automag headshot kills in any level.Boom, Headshot (5)
Get 10 Rocket kills on Kizingo Boulevard.Both Tubes (5)
Complete the Campaign on Heroic difficulty.Campaign Complete: Heroic (100)
Complete the Campaign on Legendary to unlock a new Firefight character.Campaign Complete: Legendary (100)
Complete the Campaign on Normal difficulty.Campaign Complete: Normal (100)
Complete Coastal Highway on Normal, Heroic, or Legendary to unlock a new Firefight mission.Coastal Highway (50)
Kill 5 enemies while using VISR mode.Dark Times (5)
Complete Data Hive on Normal, Heroic, or Legendary to unlock a new Firefight mission.Data Hive (50)
Get 15 headshot kills on NMPD HQ.Dome Inspector (5)
Get 5 sticky grenade kills in any level.Ewww, Sticky (5)
Score over 200,000 points in Firefight on Alpha Site.Firefight: Alpha Site (10)
Score over 200,000 points in Firefight on Chasm Ten.Firefight: Chasm Ten (10)
Score over 200,000 points in Firefight on Crater.Firefight: Crater (10)
Score over 200,000 points in Firefight on Last Exit.Firefight: Last Exit (10)
Score over 200,000 points in Firefight on Lost Platoon.Firefight: Lost Platoon (10)
Score over 200,000 points in Firefight on Rally Point.Firefight: Rally Point (10)
Score over 200,000 points in Firefight on Security Zone.Firefight: Security Zone (10)
Score over 200,000 points in Firefight on Windward.Firefight: Windward (10)
Do not kill any engineers at night in New Mombasa, alone or with another ODST.Good Samaritan (20)
Find the 3rd clue unraveling the mystery, alone or with another ODST.Gumshoe (10)
Finish any level with at least one Skull activated.Headcase (5)
Find the first Medical Kiosk and heal yourself.Heal Up (5)
Kill 10 enemies with the Flamethrower on Data Hive.I Like Fire (5)
Find the first clue unraveling the mystery.Junior Detective (10)
Complete Kikowani Station on Normal, Heroic, or Legendary.Kikowani Station (30)
Complete Kizingo Blvd. on Normal, Heroic, or Legendary to unlock a new Firefight character.Kizingo Boulevard (30)
Get 10 Spartan Laser kills on ONI Alpha Site.Laser Blaster (5)
Find the first Audio Log.Listener (5)
Plasma Pistol Overcharge and quickly kill 10 Brutes.My Clothes! (5)
Kill 10 engineers at night in New Mombasa, alone or with another ODST.Naughty Naughty (5)
Complete NMPD HQ on Normal, Heroic, or Legendary to unlock a new Firefight character.NMPD HQ (30)
Complete ONI Alpha Site on Normal, Heroic, or Legendary to unlock a new Firefight mission.ONI Alpha Site (30)
Get 10 Needler supercombine kills on any covenant.Pink and Deadly (5)
Stun a vehicle with an overcharged plasma pistol and quickly kill the driver.Stunning! (5)
Find the final clue unraveling the mystery, alone or with another ODST.Super Sleuth (10)
Complete Tayari Plaza on Normal, Heroic, or Legendary to unlock a new Firefight character.Tayari Plaza (30)
Access and download the city map to your VISR.Tourist (5)
Trade weapons with a fellow character.Trading Down (5)
Find 3 Audio Logs, alone or with another ODST.Tuned In (15)
Complete Uplift Reserve on Normal, Heroic, or Legendary to unlock a new Firefight character.Uplift Reserve (30)
Finish any level solo on Legendary, on LIVE, with no shots fired or grenades thrown.Vidmaster Challenge: Classic (25)
Complete Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion.Vidmaster Challenge: De'ja` Vu (25)
In Firefight, on any mission, pass the 4th Set on 4-player Heroic LIVE co-op.Vidmaster Challenge: Endure (25)
Kill all Wraiths in Uplift Reserve.Wraith Killer (5)

Contributed By: Guard Master and lygerzero189.

Firefight Missions

Complete certain campaign missions to unlock new maps for the Firefight game mode.

UnlockableHow to Unlock
Complete the ONI Alpha Site campaign mission on any difficulty.Alpha Site
Complete the Date Hive campaign mission on any difficulty.Chasm Ten
Complete the Coastal Highway campaign mission on any difficulty.Last Exit
Complete the Uplift Reserve campaign mission on any difficulty.Lost Platoon

Contributed By: Torkzor.

Firefight Unlockable Characters

Perform the task to unlock characters for use in Firefight mode.

UnlockableHow to Unlock
Complete "Tayari Plaza" on Normal or higher."Buck" Firefight Character
Complete the Campaign on Legendary difficulty."Dare" Firefight Character
Complete "Uplift Reserve" on Normal or higher."Dutch" Firefight Character
Complete "Kizingo Boulevard" on Normal or higher."Mickey" Firefight Character
Complete "NMPD HQ" on Normal or higher."Romeo" Character

Contributed By: DarthRandall.