| icon | info | gamerscore |
|---|---|---|
| Laser Blaster Got 10 Spartan Laser kills on ONI Alpha Site. | 5 | |
| Be Like Marty In Firefight, finished a full round without killing a single enemy. | 10 | |
| Stunning! Stunned a vehicle with an overcharged plasma pistol and quickly killed the driver. | 5 | |
| Firefight: Lost Platoon Scored over 200,000 points in Firefight on Lost Platoon. | 10 | |
| Headcase Finished any level with at least one Skull activated. | 5 | |
| Pink and Deadly Got 10 Needler supercombine kills on any covenant. | 5 | |
| All Ears Found 15 Audio Logs, alone or with another ODST. | 30 | |
| Campaign Complete: Legendary Completed Legendary and unlocked the Dare character in Firefight. | 100 | |
| Campaign Complete: Heroic Completed the Campaign on Heroic difficulty. | 100 | |
| Campaign Complete: Normal Completed the Campaign on Normal difficulty. | 100 | |
| Coastal Highway Completed Coastal Highway and unlocked the Last Exit Firefight mission. | 50 | |
| Data Hive Completed Data Hive and unlocked the Chasm Ten Firefight mission. | 50 | |
| I Like Fire Killed 10 enemies with the Flamethrower on Data Hive. | 5 | |
| Ewww, Sticky Got 5 sticky grenade kills in any level. | 5 | |
| Kikowani Station Completed Kikowani Station on Normal, Heroic, or Legendary. | 30 | |
| Super Sleuth Found the final clue unraveling the mystery, alone or with another ODST. | 10 | |
| NMPD HQ Completed NMPD HQ and unlocked the Romeo character in Firefight. | 30 | |
| Dome Inspector Got 15 headshot kills on NMPD HQ. | 5 | |
| ONI Alpha Site Completed ONI Alpha Site and unlocked the Alpha Site Firefight mission. | 30 | |
| Kizingo Boulevard Completed Kizingo Blvd. and unlocked the Mickey character in Firefight. | 30 | |
| Trading Down Traded weapons with a fellow character. | 5 | |
| Wraith Killer Killed all Wraiths in Uplift Reserve. | 5 | |
| Both Tubes Got 10 Rocket kills on Kizingo Boulevard. | 5 | |
| Gumshoe Found the 3rd clue unraveling the mystery, alone or with another ODST. | 10 | |
| Tuned In Found 3 Audio Logs, alone or with another ODST. | 15 | |
| Listener Found the first Audio Log. | 5 | |
| Uplift Reserve Completed Uplift Reserve and unlocked the Dutch character in Firefight. | 30 | |
| Tayari Plaza Completed Tayari Plaza and unlocked the Buck character in Firefight. | 30 | |
| Boom, Headshot Got 10 automag headshot kills in any level. | 5 | |
| Junior Detective Found the first clue unraveling the mystery. | 10 | |
| Tourist Accessed and downloaded the city map to your VISR. | 5 | |
| Dark Times Killed 5 enemies while using VISR mode. | 5 | |
| Heal Up Found the first Medical Kiosk and healed yourself. | 5 | |
| Good Samaritan Killed no Engineers in the city at night during entire campaign, alone or with another ODST. | 20 | |
| Naughty Naughty Killed 10 Engineers in the city at night, alone or with another ODST. | 5 | |
| Vidmaster Challenge: Déjà Vu Completed Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion. | 25 | |
| Firefight: Rally Point Scored over 200,000 points in Firefight on Rally Point. | 10 | |
| My Clothes! Plasma Pistol Overcharged and quickly killed 10 Brutes. | 5 | |
| Vidmaster Challenge: Classic Finished any level solo on Legendary, on LIVE, with no shots fired or grenades thrown. | 25 | |
| Audiophile Found all Audio Logs, alone or with another ODST. | 75 | |
| Firefight: Alpha Site Scored over 200,000 points in Firefight on Alpha Site. | 10 | |
| Firefight: Chasm Ten Scored over 200,000 points in Firefight on Chasm Ten. | 10 | |
| Vidmaster Challenge: Endure In Firefight, on any mission, passed the 4th Set on 4-player Heroic LIVE co-op. | 25 | |
| Firefight: Windward Scored over 200,000 points in Firefight on Windward. | 10 | |
| Firefight: Crater Scored over 200,000 points in Firefight on Crater. | 10 | |
| Firefight: Security Zone Scored over 200,000 points in Firefight on Security Zone. | 10 | |
| Firefight: Last Exit Scored over 200,000 points in Firefight on Last Exit. | 10 |
