Halo 3: ODST achievements

42.88%

Pink and Deadly

Got 10 Needler supercombine kills on any covenant.

44.15%

Wraith Killer

Killed all Wraiths in Uplift Reserve.

49.41%

Dome Inspector

Got 15 headshot kills on NMPD HQ.

56.02%

Campaign Complete: Normal

Completed the Campaign on Normal difficulty.

56.27%

Super Sleuth

Found the final clue unraveling the mystery.

57.37%

Data Hive

Completed Data Hive and unlocked the Chasm Ten Firefight mission.

57.46%

Coastal Highway

Completed Coastal Highway and unlocked the Last Exit Firefight mission.

58.64%

Ewww, Sticky

Got 5 sticky grenade kills in any level.

59.75%

Kikowani Station

Completed Kikowani Station on Normal, Heroic, or Legendary.

61.69%

NMPD HQ

Completed NMPD HQ and unlocked the Romeo character in Firefight.

62.46%

ONI Alpha Site

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

64.24%

Kizingo Boulevard

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