Scourge: Outbreak

Bloodthirsty

Common34.1%

Kill 15 enemies in a row without dying or being incapacitated

Prolific Killer

Uncommon28.8%

Kill 20 enemies in a row without dying or being incapacitated

Spray and Prey

Uncommon26.4%

Kill 10 enemies in a row with the Firefly without dying

Level 1 Complete

Uncommon26.2%

Complete Level 1 in any difficulty mode

Slaughter

Uncommon23.2%

Kill 25 enemies in a row without dying or being incapacitated

Annihilation

Uncommon17.8%

Kill 30 enemies in a row without dying or being incapacitated

Up Close and Personal

Uncommon15.0%

Kill 10 enemies in a row with the Barracuda without dying

Rifleman

Rare14.6%

Kill 10 enemies in a row with the Reaper without dying

Level 2 Complete

Rare11.4%

Complete Level 2 in any difficulty mode

Level 3 Complete

Rare9.0%

Complete Level 3 in any difficulty mode

Level 4 Complete

Rare8.3%

Complete Level 4 in any difficulty mode

Matador

Rare6.9%

Get the killing blow on the Digger

Regicide

Rare6.5%

Get the killing blow on Lilith

Beast Slayer

Rare6.4%

Get the killing blow on the Banshee

Sharpshooter

Rare6.1%

Kill 10 enemies in a row with the Guardian without dying

Gunslinger

Rare5.9%

Kill 10 enemies in a row with the Piranha without dying

Seassoned Pro

Rare5.4%

Complete all 4 Levels in 'Normal' difficulty mode

Splash Damage

Rare5.3%

Kill 4 enemies simultaneously with the Shockwave Ability

Jack Of All Trades

Legendary4.7%

Obtain Rank 5 in all 4 XP categories

Eat Lead!

Legendary4.6%

Kill 10 enemies in a row with the Chimera without dying

Co-Ordinated Fire

Legendary4.5%

Complete any Level, in any difficulty, in a 4-player co-op game

Tsunami

Legendary4.0%

Kill 10 enemies in a row with the Shockwave without dying

Stuck On You

Legendary3.7%

Kill 4 enemies simultaneously with an Adhesive Grenade

Field Medic

Legendary3.4%

Revive an incapacitated Player 10 times in Campaign Mode

Combustion

Legendary3.3%

Kill 4 enemies simultaneously with a Grenade

Bruiser

Legendary3.2%

Kill 10 enemies in a row with the Melee Attack without dying

Rocket Man

Legendary2.9%

Kill 10 enemies in a row with the Manticore without dying

Death Touch

Legendary2.8%

Kill an enemy Player after you die

Small Arms Specialist

Legendary2.8%

Complete any Level, in any difficulty, using only the Piranha

Survivor

Legendary2.7%

Complete Level 1 in any difficulty mode without being incapacitated

Catch!

Legendary2.6%

Kill 10 enemies in a row with Grenades without dying

Grizzled Veteran

Legendary2.6%

Complete all 4 Levels in 'Nightmare' difficulty mode

Kleptomaniac

Legendary2.6%

Capture the Flag 3 times during a Capture-The-Flag round

No Escape

Legendary2.6%

Kill 10 enemies in a row with Adhesive Grenades without dying

Master Of All Trades

Legendary2.5%

Obtain Rank 10 in all 4 XP categories

Denial

Legendary2.4%

End an enemy Player's killing spree

Flawless

Legendary2.4%

Win a Team Deathmatch round with 10 kills and zero deaths

One-Man Army

Legendary2.4%

Win a Deathmatch round with at least 50 kills

Weapons Pro

Legendary2.4%

Obtain all Weapons Awards

Domination

Legendary2.3%

Win a Capture The Flag round with 10 kills and zero deaths

Survival Expert

Legendary2.3%

Complete Level 3 in any difficulty mode without being incapacitated

Survival Master

Legendary2.3%

Complete Level 4 in any difficulty mode without being incapacitated

Survival Specialist

Legendary2.3%

Complete Level 2 in any difficulty mode without being incapacitated