This is a list of Halo 3: ODST Achievements. There are a total of 47 achievements that are worth a total of 1000 Gamerscore 
(GS).
List
Campaign
| Icon | Name | Description | Gamerscore
|
|---|---|---|---|
| Level Completion | |||
|
Tayari Plaza | Complete Tayari Plaza on Normal, Heroic, or Legendary to unlock a new Firefight character. |
30 
|
|
Uplift Reserve | Complete Uplift Reserve on Normal, Heroic, or Legendary to unlock a new Firefight character. |
30
|
|
Kizingo Boulevard | Complete Kizingo Blvd. on Normal, Heroic, or Legendary to unlock a new Firefight character. |
30
|
|
ONI Alpha Site | Complete ONI Alpha Site on Normal, Heroic, or Legendary to unlock a new Firefight mission. |
30
|
|
NMPD HQ | Complete NMPD HQ on Normal, Heroic, or Legendary to unlock a new Firefight character. |
30
|
|
Kikowani Station | Complete Kikowani Station on Normal, Heroic, or Legendary. | 30
|
|
Data Hive | Complete Data Hive on Normal, Heroic, or Legendary to unlock a new Firefight mission. |
50
|
|
Coastal Highway | Complete Coastal Highway on Normal, Heroic, or Legendary to unlock a new Firefight mission. |
50
|
| Campaign Completion | |||
|
Campaign Complete: Normal | Complete the Campaign on Normal difficulty. | 100
|
|
Campaign Complete: Heroic | Complete the Campaign on Heroic difficulty. (unlocks achievement for Normal, if not earned). |
100
|
|
Campaign Complete: Legendary | Complete the Campaign on Legendary to unlock a new Firefight character. (unlocks achievement for Normal and Heroic, if not earned). |
100
|
| Audio Logs | |||
|
Listener | Find the first Audio Log. | 5
|
|
Tuned In | Find 3 Audio Logs, alone or with another ODST. | 15
|
|
All Ears | Find 15 Audio Logs, alone or with another ODST. | 30
|
|
Audiophile | Find all Audio Logs, alone or with another ODST. | 75
|
| Miscellaneous | |||
|
Tourist | Access and download the city map to your VISR. | 5
|
|
Heal Up | Find the first Medical Kiosk and heal yourself. | 5
|
|
Junior Detective | Find the first clue unraveling the mystery. | 10
|
|
Gumshoe | Find the 3rd clue unraveling the mystery, alone or with another ODST. | 10
|
|
Super Sleuth | Find the final clue unraveling the mystery, alone or with another ODST. | 10
|
|
Wraith Killer | Kill all Wraiths in Uplift Reserve. | 5
|
|
Both Tubes | Get 10 Rocket kills on Kizingo Boulevard. | 5
|
|
Laser Blaster | Get 10 Spartan Laser kills on ONI Alpha Site. | 5
|
|
Dome Inspector | Get 15 headshot kills on NMPD HQ. | 5
|
|
I Like Fire | Kill 10 enemies with the Flamethrower on Data Hive. | 5
|
|
Naughty Naughty | Killing things that are new and different is good, alone or with another ODST. | 5
|
|
Good Samaritan | Killing things that are new and different is bad, alone or with another ODST. | 20
|
|
Headcase | Finish any level with at least one Skull activated. | 5
|
|
Trading Down | Trade weapons with a fellow character. | 5
|
| Miscellaneous (Campaign or Firefight) | |||
|
Dark Times | Kill 5 enemies while using VISR mode. | 5
|
|
My Clothes! | Plasma Pistol Overcharge and quickly kill 10 Brutes. | 5
|
|
Boom, Headshot | Get 10 automag headshot kills in any level. | 5
|
|
Pink and Deadly | Get 10 Needler supercombine kills on any covenant. | 5
|
|
Ewww, Sticky | Get 5 sticky grenade kills in any level. | 5
|
|
Stunning! | Stun a vehicle with an overcharged plasma pistol and quickly kill the driver. | 5
|
Firefight
| Icon | Name | Description | G points |
|---|---|---|---|
|
Be Like Marty | In Firefight, finish a full round without killing a single enemy. | 10
|
|
Firefight: Last Exit | Score over 200,000 points in Firefight on Last Exit. | 10
|
|
Firefight: Chasm Ten | Score over 200,000 points in Firefight on Chasm Ten. | 10
|
|
Firefight: Windward | Score over 200,000 points in Firefight on Windward. | 10
|
|
Firefight: Lost Platoon | Score over 200,000 points in Firefight on Lost Platoon. | 10
|
|
Firefight: Crater | Score over 200,000 points in Firefight on Crater. | 10
|
|
Firefight: Rally Point | Score over 200,000 points in Firefight on Rally Point. | 10
|
|
Firefight: Alpha Site | Score over 200,000 points in Firefight on Alpha Site. | 10
|
|
Firefight: Security Zone | Score over 200,000 points in Firefight on Security Zone. | 10
|
Vidmaster Challenges
When all the Vidmaster Challenges are unlocked (including the ones in Halo 3), you can unlock Recon armor by visiting your Bungie.net Service Record.
| Icon | Name | Description | G points |
|---|---|---|---|
|
Vidmaster Challenge: Classic | Finish any level solo on Legendary, on LIVE, with no shots fired or grenades thrown. | 25
|
|
Vidmaster Challenge: Déjà Vu | Complete Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion. | 25
|
|
Vidmaster Challenge: Endure | In Firefight, on any mission, pass the 4th Set on 4-player Heroic LIVE co-op. | 25
|
Trivia
- Achievements which require one to kill enemies with a certain weapon have a red diamond in the background, while achievements which require one to complete a certain level have a light green circle in the background.
- Halo 3: ODST gives players alerts on-screen as they make progress toward kill-based achievements (i.e. Dark Times, Naughty Naughty and I Like Fire). It is the only Halo game to date to feature this mechanic.