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Killing Spree - Kill 5 Helghast in 15 seconds Kill 5 Helghast in 15 seconds whilst on foot and maintaining at least 85% health

Cruiser Ribbon Complete The Cruiser on any difficulty level

For tombstone Let the Valkyrie be destroyed in the Campaign

Riot Control Kill 20 enemies while linked to the Mobile Cover Drone.

Safety First - Shoot off 100 helmets Shoot off 100 Helghast helmets during battle

Blood wake Get 30 headshots in the South China Sea mission in the Campaign

Shadows of the Past Activate 63 ECHO scenes.

Unseen Predator Remain in Zer0's Decepti0n mode for 10 seconds straight.

Maelstra Ribbon Complete Maelstra Barrens on any difficulty level

This Is My Boomstick Kill 30 enemies with the XM25 in "Black Tuesday."

Turn around... Perform 5 dog tag kills in Multiplayer

So Much Blood! Gunzerk continuously for 90 seconds.

Informant Collect 22 Intel Items.

Danger Close Take down a chopper with an AC-130 smoke grenade in "Bag and Drag."

Birdie Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.

Who Needs Air? Suffocated for 5 continuous minutes without dying.

Man Overboard! Melee an enemy so they fly off the side of the ship in "Armada."

Loud Enough For You? Kill 10 enemies or drones while affected by a sonic blast.

Tickets please Shoot the grapple guys off the side of the train.

You're Getting Good at This Reach Expert Level 5 in single-player

Blood for Blood Complete Vengeance on Hardened, Veteran, or Realistic.

Lcnce n Rgstrtn pls Bust 10 Racers in a Mustang

History In The Making Collect over half of the Intel.

No Bear Left Behind Unlocked the Secret Exit in Unbearable.

Doing Camo Right In Campaign, unlock all camos for any weapon.

City Dweller Made it to the city in Regular or Hardcore difficulty.

Ménage à Trois Destroy 3 tanks with a single 105mm shot in "Iron Lady."

Unlocked Potential Fully upgrade a Cybernetics Core.

Out of the Frying Pan... Complete "Persona Non Grata", "Turbulence", and "Back on the Grid" on Veteran difficulty.

8 Buster Bust a Racer at Heat 8 or greater

Beam Me Up Discovered all named locations aboard the Helios Space Station.

Jack-pot Destroy 21 slot machines.

For Whom the Shell Tolls Destroy all targets during the mortar sequence with only 4 shells in "Back on the Grid."

The Flora Flop Unlocked the Secret Exit in Diggin' It.

Home Sweet Home Occupy The Relay Station (Valley Of The Yetis).

Strike! Kill 5 enemies with a single grenade.

Friend to the Forest Complete "Thy Bard, with a Vengeance".

Deadly Specialist Get a Specialist-based medal that requires 3 or more rapid kills while using any Specialist Weapon.

Look Both Ways Kill all the KVA in the traffic section without damaging a civilian vehicle in "Traffic."

The Lovers Steal the Relic.

The Best of the Best Complete the campaign on Hardened or Veteran difficulty.

Bursting Coffers Have at least 100,000 gold.

Night Survivor Defend The Relay Station And Survive The First Night (Valley Of The Yetis).

What Goes Up... Destroy all the choppers with only the UGV's grenade launcher in "Persona Non Grata."

No stone left unturned Find 18 collectibles in the Campaign

Friends and Foes Complete Rise and Fall on Hardened, Veteran, or Realistic.

Party Crasher Kill 20 enemies with the Grappling Hook in "Sentinel."

Maximum Overdrive Kill 50 enemies while using Overdrive.

A Stitch in Time Saves 99 Earn 99 Lives.

Burn Baby Burn Destroy 80 Fuel containers.