It's Not Easy Being Greasy
Objective: Cause a Specimen to Die by Luring them into Bloat Acid.
Experimenticenticide
Objective: Kill 100 Specimens.
Social Outburst
Objective: Kill 8 Specimens with One Grenade.
Experimentimillicide
Objective: Kill 1,000 Specimens.
Philanthropist
Objective: Give 1,000 Pounds to Teammates who have 50% of Your Cash or Less.
Self Medicator
Objective: In Co-op Mode, Use Syringe on Yourself 100 Times.
Straight Rush
Objective: Kill the Patriarch Before he has a Chance to Heal.
I Like To Watch
Objective: Aquire 5 Minutes of "Zed-Time".
Too Close For Comfort
Objective: Finish off a Fleshpound using a Melee Attack.
Homer's Heroes
Objective: Kill 100 Sirens.
Random Axe of Kindness
Objective: Kill 15 Specimens with a Fire Axe in a Single Wave.
Getting Chunky
Objective: Obliterate 10 Zeds at once with the Pipe Bomb.
Pub Crawl
Objective: Win a Long Game on West London on Normal Difficulty.
Quarter Pounder With Ease
Objective: Turn 5 Fleshpounds into Giblets.
Fascist Dietitian
Objective: Kill 200 Bloats.
Keep Those Sneakers Off the Floor!
Objective: Kill 20 Stalkers with Explosives.
Careful Spender
Objective: Kill 4 Specimens with a Single Shot from a Hunting Shotgun.
Lab Cleaner
Objective: Win a Long Game on Biotics Lab on Normal Difficulty.
It's What's Inside That Counts
Objective: Turn 500 Specimens into Giblets.
Experimentilottacide
Objective: Kill 10,000 Specimens.
Lord of the Manor
Objective: Win a Long Game on Manor on Normal Difficulty.
Who Brings a Gun to a Snow Ball Fight?
Objective: Kill a Christmas Husk with any Pistol.
Back to Work
Objective: Kill 20 Christmas Clots in one wave.
Chicken Farmer
Objective: Win a Long Game on Farm on Normal Difficulty.
Merry Friggin Christmas
Objective: Kill the Christmas Patriarch.
The Boss
Objective: Win a Long Game on Offices on Normal Difficulty.
The L.A.W. That Broke The Camel's Back
Objective: Deliver the Killing Blow to the Patriarch with a L.A.W. Rocket.
Master Surgeon
Objective: As a Medic, Kill 8 Specimens using a Knife in a Single Wave.
Flaming Hell, That was Close
Objective: As Firebug, kill the Husk with the Flamethrower before he hurts anyone.
Let Them Burn
Objective: Get 1000 points of burn damage with the MAC-10.
Thin-Ice Pirouette
Objective: Complete 10 Waves when the Rest of your Team has Died.
Bitter Irony
Objective: Kill 2 Scrakes with a Chainsaw in a Single Wave.
Hard Pub Crawl
Objective: Win a Long Game on West London on Hard Difficulty.
Rudolph, the Bloody Nosed Reindeer
Objective: Kill a Christmas Crawler with a Crossbow.
Healing Touch
Objective: Heal 200 teammates with the MP7's medication dart.
Tin Man
Objective: Win a Long Game on Foundry, on Normal Difficulty.
Killer Junior
Objective: Kill 20 crawlers in mid-air with the M79.
Fending off Mrs. Claws
Objective: Kill 3 Christmas Stalkers with a Lever Action Rifle without reloading.
Squirrel King of the Dark Forest
Objective: Win a Long Game on Wyre, on Normal Difficulty.
SCAR'd
Objective: Kill 1000 Specimens with the SCAR.
Eggnog Anyone?
Objective: Get covered in Christmas Bloat Bile and live for 10 seconds on Hard, Suicidal, or Hell on Earth.
Lab Assistant
Objective: Win a Long Game on Biotics Lab on Hard Difficulty.
The Long War
Objective: Complete a Long Game on all 5 Core Maps on Normal Difficulty.
Hot Cross Fun
Objective: Kill 25 Burning Specimens with a Crossbow.
Duke of the Manor
Objective: Win a Long Game on Manor on Hard Difficulty.
A Bit Barmy
Objective: Win a Long Game on Bedlam, on Normal Difficulty.
Daytrip
Objective: Win a Long Game on Mountain Pass on Normal Difficulty.
Toasted Jack Frost
Objective: Kill the Christmas Scrake with a Fire-based weapon.
Hard Boss
Objective: Win a Long Game on Offices on Hard Difficulty.
Cattle Farmer
Objective: Win a Long Game on Farm on Hard Difficulty.
Walking in A Winter Horror Land
Objective: Win a Long Game on Santa's Evil Lair on Normal Difficulty.
Merry Men
Objective: Kill the Patriarch when everyone is ONLY using Crossbows.
Blooper Reel
Objective: Turn 500 Zeds into Giblets using the M79.
Deck the Halls with Buckets o' Blood
Objective: Kill 3 Christmas Zeds in 1 ZED time chain with a Melee weapon.
Death To The Mad Scientist
Objective: Defeat the Patriarch on Suicidal.
Golden Potato
Objective: Get into GLaDOS' core on Aperture.
Warehouse Janitor
Objective: Win a Long Game on Crash on Normal Difficulty.
Long, Hot Summer
Objective: Complete a Long Game on all 3 Summer 2009 maps on Normal Difficulty.
Steel Worker
Objective: Win a Long Game on Foundry, on Hard Difficulty.
Departure Gallery
Objective: Win a Long Game on Departed on Normal Difficulty.
Explosive Personality
Objective: As Demolitions, kill 1000 Specimens with the Pipebomb.
Slight Drip
Objective: Win a Long Game on Waterworks on Normal Difficulty.
Raccoon King of the Dark Forest
Objective: Win a Long Game on Wyre, on Hard Difficulty.
Waste Disposal
Objective: Win a Long Game on Biohazard on Normal Difficulty.
Ice Cube
Objective: Win a Long Game on Icebreaker on Normal Difficulty.
The Hard War
Objective: Complete a Long Game on all 5 Core Maps on Hard Difficulty.
Gone Mental
Objective: Win a Long Game on Bedlam, on Hard Difficulty.
Pound This
Objective: Kill 100 Fleshpounds with the AA12.
Running Late
Objective: Win a Long Game on Filth's Cross on Normal Difficulty.
Science Got Done
Objective: Win a Long Game on Aperture on Normal Difficulty.
Neighborhood Watch
Objective: Win a Long Game on Suburbia on Normal Difficulty.
Gimme a Plaster!
Objective: Win a Long Game on Hospital Horrors on Normal Difficulty.
Tis Better to Give than to Receive
Objective: Drop 3 Tier 3 weapons for others (with which they kill at least one Christmas Zed).
Cracked the Nutcracker!
Objective: Land the killing blow on a Christmas Fleshpound with a Knife.
Not So Silent Night
Objective: Kill a Christmas Siren with an undetonated LAW rocket.
Gone Camping
Objective: Win a Long Game on Mountain Pass on Hard Difficulty.
Bad Santa
Objective: Unlock 10 of the 13 Christmas Achievements along with any Christmas Map achievement.
Suicidal Pub Crawl
Objective: Win a Long Game on West London on Suicidal Difficulty.
Summer of 2009
Objective: Complete a Long Game on all 3 Summer 2009 maps on Hard Difficulty.
That's not Santa!
Objective: Kill 3 Christmas Bloats with the Bullpup in one wave.
Lab Professor
Objective: Win a Long Game on Biotics Lab on Suicidal Difficulty.
Dot of Doom
Objective: Get 25 headshots in a row with the EBR while using the Laser Sight.
Emperor of the Manor
Objective: Win a Long Game on Manor on Suicidal Difficulty.
Mr. Perky
Objective: Get All of your Perks up to Level 5.
Uber Tuber
Objective: Expensive but delicious! Brought to you by Dr. Dougley and Lord Ned.
Departure Lounge
Objective: Win a Long Game on Departed on Hard Difficulty.
Waste Land
Objective: Win a Long Game on Biohazard on Hard Difficulty.
Warehouse Forklift Operator
Objective: Win a Long Game on Crash on Hard Difficulty.
Alligator Farmer
Objective: Win a Long Game on Farm on Suicidal Difficulty.
Mad Boss
Objective: Win a Long Game on Offices on Suicidal Difficulty.
Silent Night, Evil Night
Objective: Win a Long Game on Santa's Evil Lair on Hard Difficulty.
Man of Steel
Objective: Win a Long Game on Foundry, on Suicidal Difficulty.
Complete Barking
Objective: Win a Long Game on Bedlam, on Suicidal Difficulty.
Burst Pipe
Objective: Win a Long Game on Waterworks on Hard Difficulty.
Can't Catch Me!
Objective: Kill 2 Christmas Gorefasts with a Melee weapon from behind in one wave.
Piece of Cake
Objective: Complete all new map achievements on Normal Difficulty.
Private Security
Objective: Win a Long Game on Suburbia on Hard Difficulty.
Dignity for the Dead
Objective: Kill 10 Specimens Feeding on Dead Teammates Corpses.
Bear King of the Dark Forest
Objective: Win a Long Game on Wyre, on Suicidal Difficulty.
That Bloody Well Hurts!
Objective: Win a Long Game on Hospital Horrors on Hard Difficulty.
Crushed Ice
Objective: Win a Long Game on Icebreaker on Hard Difficulty.
Missed Connection
Objective: Win a Long Game on Filth's Cross on Hard Difficulty.
The Completely Suicidal War
Objective: Complete a Long Game on all 5 Core Maps on Suicidal Difficulty.
Still Alive
Objective: Win a Long Game on Aperture on Hard Difficulty.
And Back to School
Objective: Complete a Long Game on all 3 Summer 2009 maps on Suicidal Difficulty.
Mountaineer
Objective: Win a Long Game on Mountain Pass on Suicidal Difficulty.
Departure Gate
Objective: Win a Long Game on Departed on Suicidal Difficulty.
Waste of Space
Objective: Win a Long Game on Biohazard on Suicidal Difficulty.
Pound Cake
Objective: Complete all new map achievements on Hard Difficulty.
Warehouse Foreman
Objective: Win a Long Game on Crash on Suicidal Difficulty.
Wasted
Objective: Win a Long Game on Biohazard on Hell on Earth Difficulty.
Hellish Pub Crawl
Objective: Win a Long Game on West London on Hell on Earth Difficulty.
Grandma got Eaten by a Reindeer
Objective: Win a Long Game on Santa's Evil Lair on Hell on Earth Difficulty.
I'm Dreaming of a Red Christmas
Objective: Win a Long Game on Santa's Evil Lair on Suicidal Difficulty.
Warehouse Manager
Objective: Win a Long Game on Crash on Hell on Earth Difficulty.
Scientist from Hell
Objective: Win a Long Game on Biotics Lab on Hell on Earth Difficulty.
Dear Departed
Objective: Win a Long Game on Departed on Hell on Earth Difficulty.
Not Dead Yet!
Objective: Win a Long Game on Hospital Horrors on Hell on Earth Difficulty.
Demon Farmer
Objective: Win a Long Game on Farm on Hell on Earth Difficulty.
Vigilante
Objective: Win a Long Game on Suburbia on Suicidal Difficulty.
Iceberg
Objective: Win a Long Game on Icebreaker on Suicidal Difficulty.
I'm Dying Here!
Objective: Win a Long Game on Hospital Horrors on Suicidal Difficulty.
Train Wreck
Objective: Win a Long Game on Filth's Cross on Suicidal Difficulty.
Park Ranger
Objective: Win a Long Game on Mountain Pass on Hell on Earth Difficulty.
Pressure Failure
Objective: Win a Long Game on Waterworks on Suicidal Difficulty.
This is a Triumph
Objective: Win a Long Game on Aperture on Suicidal Difficulty.
Boss from Hell
Objective: Win a Long Game on Offices on Hell on Earth Difficulty.
Commit-ed for life
Objective: Win a Long Game on Bedlam on Hell on Earth Difficulty.
Diablo Steel Man
Objective: Win a Long Game on Foundry on Hell on Earth Difficulty.
Demonic King of the Manor
Objective: Win a Long Game on Manor on Hell on Earth Difficulty.
Wolf King of the Dark Forest
Objective: Win a Long Game on Wyre on Hell on Earth Difficulty.
Pile Up
Objective: Win a Long Game on Filth's Cross on Hell on Earth Difficulty.
Fruit Cake
Objective: Complete all new map achievements on Suicidal Difficulty.
Floodgate to Hell
Objective: Win a Long Game on Waterworks on Hell on Earth Difficulty.
SWAT
Objective: Win a Long Game on Suburbia on Hell on Earth Difficulty.
Comet
Objective: Win a Long Game on Icebreaker on Hell on Earth Difficulty.
I'm Making a Note Here, Huge Success
Objective: Win a Long Game on Aperture on Hell on Earth Difficulty.
Devil Cake
Objective: Complete all new map achievements on Hell On Earth Difficulty.
