Firefight: Chasm Ten

Scored over 200,000 points in Firefight on Chasm Ten.

Firefight: Rally Point

Scored over 200,000 points in Firefight on Rally Point.

Firefight: Security Zone

Scored over 200,000 points in Firefight on Security Zone.

Firefight: Crater

Scored over 200,000 points in Firefight on Crater.

Audiophile

Found all Audio Logs, alone or with another ODST.

Naughty Naughty

Killed 10 Engineers in the city at night, alone or with another ODST.

Firefight: Last Exit

Scored over 200,000 points in Firefight on Last Exit.

All Ears

Found 15 Audio Logs, alone or with another ODST.

Campaign Complete: Legendary

Completed Legendary and unlocked the Dare character in Firefight.

Campaign Complete: Heroic

Completed the Campaign on Heroic difficulty.

Firefight: Alpha Site

Scored over 200,000 points in Firefight on Alpha Site.

Firefight: Windward

Scored over 200,000 points in Firefight on Windward.

Be Like Marty

In Firefight, finished a full round without killing a single enemy.

Vidmaster Challenge: Endure

In Firefight, on any mission, passed the 4th Set on 4-player Heroic LIVE co-op.

Firefight: Lost Platoon

Scored over 200,000 points in Firefight on Lost Platoon.

Vidmaster Challenge: Déjà Vu

Completed Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion.

Vidmaster Challenge: Classic

Finished any level solo on Legendary, on LIVE, with no shots fired or grenades thrown.

I Like Fire

Killed 10 enemies with the Flamethrower on Data Hive.

Good Samaritan

Killed no Engineers in the city at night during entire campaign, alone or with another ODST.

Both Tubes

Got 10 Rocket kills on Kizingo Boulevard.

Headcase

Finished any level with at least one Skull activated.

Stunning!

Stunned a vehicle with an overcharged plasma pistol and quickly killed the driver.

Coastal Highway

Completed Coastal Highway and unlocked the Last Exit Firefight mission.

Campaign Complete: Normal

Completed the Campaign on Normal difficulty.

Data Hive

Completed Data Hive and unlocked the Chasm Ten Firefight mission.

Kikowani Station

Completed Kikowani Station on Normal, Heroic, or Legendary.

Super Sleuth

Found the final clue unraveling the mystery, alone or with another ODST.

NMPD HQ

Completed NMPD HQ and unlocked the Romeo character in Firefight.

Dome Inspector

Got 15 headshot kills on NMPD HQ.

ONI Alpha Site

Completed ONI Alpha Site and unlocked the Alpha Site Firefight mission.

Laser Blaster

Got 10 Spartan Laser kills on ONI Alpha Site.

Kizingo Boulevard

Completed Kizingo Blvd. and unlocked the Mickey character in Firefight.

Trading Down

Traded weapons with a fellow character.

Gumshoe

Found the 3rd clue unraveling the mystery, alone or with another ODST.

Ewww, Sticky

Got 5 sticky grenade kills in any level.

Listener

Found the first Audio Log.

Uplift Reserve

Completed Uplift Reserve and unlocked the Dutch character in Firefight.

Wraith Killer

Killed all Wraiths in Uplift Reserve.

Tayari Plaza

Completed Tayari Plaza and unlocked the Buck character in Firefight.

My Clothes!

Plasma Pistol Overcharged and quickly killed 10 Brutes.

Pink and Deadly

Got 10 Needler supercombine kills on any covenant.

Boom, Headshot

Got 10 automag headshot kills in any level.

Junior Detective

Found the first clue unraveling the mystery.

Tourist

Accessed and downloaded the city map to your VISR.

Dark Times

Killed 5 enemies while using VISR mode.

Heal Up

Found the first Medical Kiosk and healed yourself.

Tuned In

Found 3 Audio Logs, alone or with another ODST.