| Unlockable | How to unlock |
|---|
| A Bit Barmy | Win a Long Game on Bedlam, on Normal Difficulty. |
| Alligator Farmer | Win a Long Game on Farm on Suicidal Difficulty. |
| And Back to School | Complete a Long Game on all 3 Summer 2009 maps on Suicidal Difficulty. |
| Bear King of the Dark Forest | Win a Long Game on Wyre, on Suicidal Difficulty. |
| Bitter Irony | Kill 2 Scrakes with a Chainsaw in a Single Wave. |
| Blooper Reel | Turn 500 Zeds into Giblets using the M79. |
| Careful Spender | Kill 4 Specimens with a Single Shot from a Hunting Shotgun. |
| Cattle Farmer | Win a Long Game on Farm on Hard Difficulty. |
| Chicken Farmer | Win a Long Game on Farm on Normal Difficulty. |
| Complete Barking | Win a Long Game on Bedlam, on Suicidal Difficulty. |
| Death To The Mad Scientist | Defeat the Patriarch on Suicidal. |
| Dignity for the Dead | Kill 10 Specimens Feeding on Dead Teammates Corpses. |
| Dot of Doom | Get 25 headshots in a row with the EBR while using the Laser Sight. |
| Duke of the Manor | Win a Long Game on Manor on Hard Difficulty. |
| Emperor of the Manor | Win a Long Game on Manor on Suicidal Difficulty. |
| Experimenticenticide | Kill 100 Specimens. |
| Experimentilottacide | Kill 10,000 Specimens. |
| Experimentimillicide | Kill 1,000 Specimens. |
| Explosive Personality | As Demolitions, kill 1000 Specimens with the Pipebomb. |
| Fascist Dietitian | Kill 200 Bloats. |
| Flaming Hell, That was Close | As Firebug, kill the Husk with the Flamethrower before he hurts anyone. |
| Getting Chunky | Obliterate 10 Zeds at once with the Pipe Bomb. |
| Gone Mental | Win a Long Game on Bedlam, on Hard Difficulty. |
| Hard Boss | Win a Long Game on Offices on Hard Difficulty. |
| Hard Pub Crawl | Win a Long Game on West London on Hard Difficulty. |
| Healing Touch | Heal 200 teammates with the MP7's medication dart. |
| Homer's Heroes | Kill 100 Sirens. |
| Hot Cross Fun | Kill 25 Burning Specimens with a Crossbow. |
| I Like To Watch | Aquire 5 Minutes of "Zed-Time". |
| It's Not Easy Being Greasy | Cause a Specimen to Die by Luring them into Bloat Acid. |
| It's What's Inside That Counts | Turn 500 Specimens into Giblets. |
| Keep Those Sneakers Off the Floor! | Kill 20 Stalkers with Explosives. |
| Killer Junior | Kill 20 crawlers in mid-air with the M79. |
| Lab Assistant | Win a Long Game on Biotics Lab on Hard Difficulty. |
| Lab Cleaner | Win a Long Game on Biotics Lab on Normal Difficulty. |
| Lab Professor | Win a Long Game on Biotics Lab on Suicidal Difficulty. |
| Long, Hot Summer | Complete a Long Game on all 3 Summer 2009 maps on Normal Difficulty. |
| Lord of the Manor | Win a Long Game on Manor on Normal Difficulty. |
| Mad Boss | Win a Long Game on Offices on Suicidal Difficulty. |
| Man of Steel | Win a Long Game on Foundry, on Suicidal Difficulty. |
| Master Surgeon | As a Medic, Kill 8 Specimens using a Knife in a Single Wave. |
| Merry Men | Kill the Patriarch when everyone is ONLY using Crossbows. |
| Mr. Perky | Get All of your Perks up to Level 5. |
| Philanthropist | Give 1,000 Pounds to Teammates who have 50% of Your Cash or Less. |
| Pound This | Kill 100 Fleshpounds with the AA12. |
| Pub Crawl | Win a Long Game on West London on Normal Difficulty. |
| Quarter Pounder With Ease | Turn 5 Fleshpounds into Giblets. |
| Raccoon King of the Dark Forest | Win a Long Game on Wyre, on Hard Difficulty. |
| Random Axe of Kindness | Kill 15 Specimens with a Fire Axe in a Single Wave. |
| SCAR'd | Kill 1000 Specimens with the SCAR. |
| Self Medicator | In Co-op Mode, Use Syringe on Yourself 100 Times. |
| Social Outburst | Kill 8 Specimens with One Grenade. |
| Steel Worker | Win a Long Game on Foundry, on Hard Difficulty. |
| Straight Rush | Kill the Patriarch Before he has a Chance to Heal. |
| Suicidal Pub Crawl | Win a Long Game on West London on Suicidal Difficulty. |
| Summer of 2009 | Complete a Long Game on all 3 Summer 2009 maps on Hard Difficulty. |
| The Boss | Win a Long Game on Offices on Normal Difficulty. |
| The Completely Suicidal War | Complete a Long Game on all 5 Core Maps on Suicidal Difficulty. |
| The Hard War | Complete a Long Game on all 5 Core Maps on Hard Difficulty. |
| The L.A.W. That Broke The Camel's Back | Deliver the Killing Blow to the Patriarch with a L.A.W. Rocket. |
| The Long War | Complete a Long Game on all 5 Core Maps on Normal Difficulty. |
| Thin-Ice Pirouette | Complete 10 Waves when the Rest of your Team has Died. |
| Tin Man | Win a Long Game on Foundry, on Normal Difficulty. |
| Too Close For Comfort | Finish off a Fleshpound using a Melee Attack. |
