Naughty Naughty 10 H3: ODST: Kill 10 Engineers. Well...Maybe One or Two 20 H3: ODST: Kill 25 Engineers. Listener 5 H3: ODST: Find the 1st Audio Log. An Ear Full 5 H3: ODST: Find the 2nd Audio Log. Tuned In 5 H3: ODST: Find the 3rd Audio Log. Do Tell 5 H3: ODST: Find the 4th Audio Log. Hear Me Out 5 H3: ODST: Find the 5th Audio Log. Eavesdropping 5 H3: ODST: Find the 6th Audio Log. Auditor 5 H3: ODST: Find the 7th Audio Log. Overheard 5 H3: ODST: Find the 8th Audio Log. Wiretapping 5 H3: ODST: Find the 9th Audio Log. Monitored 5 H3: ODST: Find the 10th Audio Log. Hang Onto My Words 5 H3: ODST: Find the 11th Audio Log. Give Heed 5 H3: ODST: Find the 12th Audio Log. Get A Load 5 H3: ODST: Find the 13th Audio Log. Snoop Troop 5 H3: ODST: Find the 14th Audio Log. All Ears 5 H3: ODST: Find the 15th Audio Log. Ear Bender 5 H3: ODST: Find the 16th Audio Log. Plugged In 5 H3: ODST: Find the 17th Audio Log. Attentive 5 H3: ODST: Find the 18th Audio Log. Watchful 5 H3: ODST: Find the 19th Audio Log. Observant 5 H3: ODST: Find the 20th Audio Log. Scout 5 H3: ODST: Find the 21st Audio Log. Adventurer 5 H3: ODST: Find the 22nd Audio Log. Spotter 5 H3: ODST: Find the 23rd Audio Log. Considerate 5 H3: ODST: Find the 24th Audio Log. On Your Toes 5 H3: ODST: Find the 25th Audio Log. Archivist 5 H3: ODST: Find the 26th Audio Log. Your Attention Please 5 H3: ODST: Find the 27th Audio Log. Catching On 5 H3: ODST: Find the 28th Audio Log. Wisening Up 5 H3: ODST: Find the 29th Audio Log. Audiophile 10 H3: ODST: Find the 30th Audio Log. Rookie 10 H3: ODST: Complete every level of the game on Easy difficulty. Urban Warfare Badge 10 H3: ODST: Complete every level of the game on Normal difficulty. First In, Last Out 20 H3: ODST: Complete every level of the game on Heroic difficulty. Mean Streets of New Mombasa 30 H3: ODST: Complete every level of the game on Legendary difficulty. Junior Detective 10 H3: ODST: Find the 1st clue to unraveling the mystery. Investigator 10 H3: ODST: Find the 2nd clue to unraveling the mystery. Gumshoe 10 H3: ODST: Find the 3rd clue unraveling the mystery. Bloodhound 10 H3: ODST: Find the 4th clue unraveling the mystery. Private Eye 10 H3: ODST: Find the 5th clue unraveling the mystery. Secret Agent 10 H3: ODST: Find the 6th clue unraveling the mystery. Record Store Owner 10 H3: ODST: Find all 30 Audio Logs. Tayari Plaza 10 H3: ODST: Complete Tayari Plaza. Uplift Reserve 10 H3: ODST: Complete Uplift Reserve. Kizingo Boulevard 10 H3: ODST: Complete Kizingo Blvd. ONI Alpha Site 10 H3: ODST: Complete ONI Alpha Site. NMPD HQ 10 H3: ODST: Complete NMPD HQ. Kikowani Station 10 H3: ODST: Complete Kikowani Station. Data Hive 10 H3: ODST: Complete Data Hive. Coastal Highway 10 H3: ODST: Complete Coastal Highway. Bill Past Due 10 H3: ODST: Beat the par time on Tayari Plaza. Floor It! 10 H3: ODST: Beat the par time on Uplift Reserve. An Artist's Canvas 10 H3: ODST: Beat the par time on Kizingo Blvd. A Pleasant Trip 10 H3: ODST: Beat the par time on ONI Alpha Site. First Stop: Anywhere But Here! 10 H3: ODST: Beat the par time on NMPD HQ. Feet Don't Fail Me Now 10 H3: ODST: Beat the par time on Kikowani Station. Overtaken By Events 10 H3: ODST: Beat the par time on Data Hive. Double Time! 10 H3: ODST: Beat the par time on Coastal Highway. Can't Stop Here, This is Brute Country 20 H3: ODST: Beat par time on all Halo 3: ODST levels. Survey Says... 10 H3: ODST: Beat the par score on Tayari Plaza. Don't Strain Your Metaphors 10 H3: ODST: Beat the par score on Uplift Reserve. Son of a Gun 10 H3: ODST: Beat the par score on Kizingo Blvd. I Love My Job 10 H3: ODST: Beat the par score on ONI Alpha Site. Pour It On 10 H3: ODST: Beat the par score on NMPD HQ. Squid Jackpot! 10 H3: ODST: Beat the par score on Kikowani Station. Magic Touch 10 H3: ODST: Beat the par score on Data Hive. This Oliphant Has No Brakes 10 H3: ODST: Beat the par score on Coastal Highway. The Marine Corps Gives Its Regards 20 H3: ODST: Beat par score on all Halo 3: ODST levels. D 20 H3: ODST: Complete Coastal Highway on 4-player Legendary co-op, with Iron, and no 'Hog or Scorpion. Do You Remember When We Met 5 H3: ODST: Play a game of Halo 3: ODST on the 22nd of any month. Safety Not Guaranteed 30 H3: ODST: Complete a Halo 3: ODST LASO Campaign playlist. Trifecta 20 H3: ODST: Complete three Halo 3: ODST playlists. NEXT! 10 H3: ODST: Complete a Halo 3: ODST playlist. Nagato Makes Moving Easy 30 H3: ODST: Complete all Halo 3: ODST Legendary campaign missions in under 3 hours. One Got Away 10 H3: ODST: View the missing link. Like a Broken Record 10 H3: ODST: Find a legendary hidden music cue. Vandalized 10 H3: ODST: Face it. Saturday Morning Cartoon 10 H3: ODST: Is there a toy inside? Classic 20 H3: ODST: Finish any level solo on Legendary, with no shots fired or grenades thrown. Catch 'Em Napping 10 H3: ODST: Kill 5 sleeping Grunts on Mombasa Streets. Strong, Silent Type 10 H3: ODST: Assassinate 3 Brutes in a row on Data Hive. Bip! Bap! BAM! 10 H3: ODST: Earn a Triple Kill medal with the pistol on any level. Pineapple Express 10 H3: ODST: Kill 4 enemies with a single plasma or frag grenade. Fowl Hunt 10 H3: ODST: Kill 3 Jetpack Brutes with a shotgun on Oni Alpha Site. Does Whatever a Spartan Can? 10 H3: ODST: Destroy a Wraith Firefly 10 H3: ODST: Kill a Drone with a flame grenade on Data Hive. "BLAM" Said The Lady! 10 H3: ODST: Swap Dare's pistol for a Rocket Launcher on Coastal Highway. One Way Ride 20 H3: ODST: Complete any level without using a health pack on Heroic or Legendary. Just Sayin...I Ain't Dead 20 H3: ODST: Complete any level without dying on Heroic or Legendary. Deference of Darkness 10 H3: ODST: Complete any level without activating VISR mode. Those Left Behind 10 H3: ODST: Finish Tayari Plaza with at least one Marine still breathing. Shoot and Scoot 10 H3: ODST: Complete NMPD HQ without firing the Sniper Rifle on Heroic or Legendary. Fast and Low 10 H3: ODST: Splatter 7 enemies with a Banshee on Kikowani Station. Shiny... 10 H3: ODST: Pilot a Banshee on Kizingo Boulevard. Bits and Pieces 10 H3: ODST: Destroy 5 Phantoms on NMPD HQ. What About Those Tanks? 10 H3: ODST: Destroy 7 Wraiths on Oni Alpha Site. Two Places, Same Time 10 H3: ODST: I've got my eye on you, Marine. Xenophobia 10 H3: ODST: Complete any level without using Covenant weapons. Monumental Thirst! 10 H2A: Found and destroyed the BLAST soda can on Remnant.. Source - X360A