| 1 |   | 62.90% | DRAG AND DROP: Rescue a Survivor from a Smoker's tongue before he takes damage. | L4D_ACHIEVEMENT_RESCUE_FROM_SMOKER | 
                
                    | 2 |   | 57.30% | TONGUE TWISTER: Kill a Smoker who has grabbed you with his tongue. | L4D_ACHIEVEMENT_RESCUE_SELF_FROM_SMOKER | 
                
                    | 3 |   | 55.70% | TANKBUSTERS: Kill a Tank without it dealing any damage to a Survivor. | L4D_ACHIEVEMENT_KILL_TANK_NO_DAMAGE | 
                
                    | 4 |   | 53.40% | BRAIN SALAD: Make 100 headshot kills. | L4D_ACHIEVEMENT_MAKE_X_HEADSHOTS | 
                
                    | 5 |   | 51.80% | BLIND LUCK: You or another Survivor take no damage after being vomited on by a Boomer. | L4D_ACHIEVEMENT_NO_DAMAGE_AFTER_VOMIT | 
                
                    | 6 |   | 49.70% | PYROTECHNICIAN: Blow up 20 Infected in a single explosion. | L4D_ACHIEVEMENT_BLOW_UP_X_INFECTED | 
                
                    | 7 |   | 46.10% | TOWERING INFERNO: Light a Tank with a Molotov. | L4D_ACHIEVEMENT_BURN_TANK | 
                
                    | 8 |   | 42.40% | HERO CLOSET: Rescue a Survivor trapped in a closet. | L4D_ACHIEVEMENT_RESCUE_FROM_CLOSET | 
                
                    | 9 |   | 40.90% | NO-ONE LEFT BEHIND: Beat a campaign with all 4 Survivors. | L4D_ACHIEVEMENT_ALL_SURVIVORS_ALIVE | 
                
                    | 10 |   | 40.40% | MY BODYGUARD: Protect any Survivor from an attacking Infected 50 times. | L4D_ACHIEVEMENT_PROTECT_SURVIVORS_X_TIMES | 
                
                    | 11 |   | 39.10% | HUNTER PUNTER: Shove a Hunter off of a pinned and helpless Survivor. | L4D_ACHIEVEMENT_RESCUE_FROM_HUNTER | 
                
                    | 12 |   | 39.00% | 101 CREMATIONS: Set 101 Infected on fire. | L4D_ACHIEVEMENT_BURN_X_INFECTED | 
                
                    | 13 |   | 38.80% | WITCH HUNTER: Kill a Witch without any Survivor taking damage from her. | L4D_ACHIEVEMENT_WITCH_NO_DAMAGE | 
                
                    | 14 |   | 34.40% | NO SMOKING SECTION: Kill 10 Smokers as they are pulling helpless Survivors. | L4D_ACHIEVEMENT_RESCUE_X_FROM_SMOKER | 
                
                    | 15 |   | 34.00% | MERCY KILLER: Survive the No Mercy campaign. | L4D_ACHIEVEMENT_SURVIVE_HOSPITAL | 
                
                    | 16 |   | 33.60% | SPINAL TAP: Kill an Infected with a single blow from behind. | L4D_ACHIEVEMENT_INFECTED_SNEAK_MELEE | 
                
                    | 17 |   | 32.50% | BURN THE WITCH: Light a Witch with a Molotov. | L4D_ACHIEVEMENT_BURN_WITCH | 
                
                    | 18 |   | 32.30% | DEAD STOP: Punch a Hunter as he is pouncing. | L4D_ACHIEVEMENT_PUNCH_HUNTER | 
                
                    | 19 |   | 27.50% | JUMP SHOT: Headshot a Hunter while he's leaping. | L4D_ACHIEVEMENT_HEADSHOT_HUNTER | 
                
                    | 20 |   | 25.20% | GROUND COVER: Save another Survivor from a Special Infected while on the ground. | L4D_ACHIEVEMENT_COVER_FRIEND_INCAPPED | 
                
                    | 21 |   | 25.20% | CRASH-PROOF: Survive the Crash Course Campaign. | L4D_ACHIEVEMENT_SURVIVE_GARAGE | 
                
                    | 22 |   | 24.90% | DEAD BARON: Survive the Dead Air campaign. | L4D_ACHIEVEMENT_SURVIVE_AIRPORT | 
                
                    | 23 |   | 24.60% | TOLL COLLECTOR: Survive the Death Toll campaign. | L4D_ACHIEVEMENT_SURVIVE_SMALLTOWN | 
                
                    | 24 |   | 23.40% | OUTBREAK: Catch a rare strain of infection, then pass it on to someone else. | L4D_ACHIEVEMENT_INFECTED | 
                
                    | 25 |   | 22.40% | CLEAN KILL: Shove a Boomer and then kill him without him splashing on anyone. | L4D_ACHIEVEMENT_SHOVE_AND_KILL_BOOMER | 
                
                    | 26 |   | 21.30% | GRIM REAPER: Survive the Blood Harvest campaign. | L4D_ACHIEVEMENT_SURVIVE_FARM | 
                
                    | 27 |   | 20.80% | STAND TALL: Survive a campaign without being incapacitated. | L4D_ACHIEVEMENT_SURVIVE_WITHOUT_INCAP | 
                
                    | 28 |   | 16.70% | DEAD GIVEAWAY: Heal a fellow Survivor when your own health is below 10. | L4D_ACHIEVEMENT_HEALTH_MARTYR | 
                
                    | 29 |   | 16.20% | BRONZE METTLE: Earn a Bronze medal in Survival mode on any official level. | L4D_ACHIEVEMENT_GET_ONE_BRONZE | 
                
                    | 30 |   | 15.20% | DOUBLE JUMP: Pounce two different Survivors on one life as a Hunter. | L4D_ACHIEVEMENT_POUNCE_X_WITHOUT_DYING | 
                
                    | 31 |   | 14.30% | CHAIN SMOKER: Constrict two Survivors on one life as a Smoker. | L4D_ACHIEVEMENT_CONSTRICT_X_WITHOUT_DYING | 
                
                    | 32 |   | 14.10% | QUICK POWER: Restart the generator within 30 seconds of it shutting off. | L4D_ACHIEVEMENT_REPOWER_GENERATOR | 
                
                    | 33 |   | 14.10% | HELPING HAND: Revive 50 incapacitated Survivors. | L4D_ACHIEVEMENT_REVIVE_X_SURVIVORS | 
                
                    | 34 |   | 14.00% | PHARM-ASSIST: Give pain pills to 10 Survivors. | L4D_ACHIEVEMENT_GIVE_PILLS_X_SURVIVORS | 
                
                    | 35 |   | 13.70% | BACK 2 HELP: Leave a safe room to save an incapped teammate and bring them back safely. | L4D_ACHIEVEMENT_LEAVE_SAFEROOM_AND_REVIVE | 
                
                    | 36 |   | 13.40% | LAST STAND: Complete one round of Survival on The Last Stand. | L4D_ACHIEVEMENT_PLAY_LIGHTHOUSE | 
                
                    | 37 |   | 12.80% | DO NOT DISTURB: Sneak past all Witches in a campaign without disturbing one. | L4D_ACHIEVEMENT_DONT_AWAKEN_WITCH | 
                
                    | 38 |   | 11.80% | FIELD MEDIC: Heal 25 Survivors with a first aid kit. | L4D_ACHIEVEMENT_HEAL_X_SURVIVORS | 
                
                    | 39 |   | 11.50% | SILVER BULLETS: Earn a Silver medal in Survival mode on any official level. | L4D_ACHIEVEMENT_GET_ONE_SILVER | 
                
                    | 40 |   | 11.30% | CR0WND: Kill a Witch with a single headshot. | L4D_ACHIEVEMENT_ONE_SHOT_KILL_WITCH | 
                
                    | 41 |   | 10.60% | BIG DRAG: Drag a Survivor 100 feet with your tongue as a Smoker. | L4D_ACHIEVEMENT_DRAG_SURVIVOR_X_DISTANCE | 
                
                    | 42 |   | 10.40% | LAMB 2 SLAUGHTER: As an Infected, incap a Survivor who has entered and left a safe room. | L4D_ACHIEVEMENT_INCAP_AFTER_SAFEROOM | 
                
                    | 43 |   | 9.80% | DEAD WRECKENING: Dole out 5000 total Survivor damage as a Special Infected. | L4D_ACHIEVEMENT_DOLE_X_TOTAL_DAMAGE | 
                
                    | 44 |   | 9.70% | VIOLENCE IS GOLDEN: Earn a Gold medal in Survival mode on any official level. | L4D_ACHIEVEMENT_GET_ONE_GOLD | 
                
                    | 45 |   | 9.10% | BARF BAGGED: Cover four Survivors with Boomer bile at once. | L4D_ACHIEVEMENT_COVER_ALL_WITH_BILE | 
                
                    | 46 |   | 9.00% | Supreme Sacrifice: Complete "The Sacrifice". | L4D_ACHIEVEMENT_COMPLETE_THE_SACRIFICE | 
                
                    | 47 |   | 8.90% | TANK STUMBLE: Stun a Tank with an explosion in the Crash Course campaign. | L4D_ACHIEVEMENT_TANK_EXPLOSION_STUN | 
                
                    | 48 |   | 8.40% | UNTOUCHABLES: No Survivors take damage after contacting the rescue vehicle. | L4D_ACHIEVEMENT_NO_TEAM_FINALE_DAMAGE | 
                
                    | 49 |   | 8.00% | MAN VS TANK: Single-handedly kill a Tank. | L4D_ACHIEVEMENT_KILL_TANK_SOLO | 
                
                    | 50 |   | 7.80% | All 4 Dead: Kill all four Survivors on one life as a Tank. | L4D_ACHIEVEMENT_KILL_ALL_WITHOUT_DYING | 
                
                    | 51 |   | 7.70% | AKIMBO ASSASSIN: Survive an entire campaign using only pistols. | L4D_ACHIEVEMENT_CAMPAIGN_WITH_PISTOLS | 
                
                    | 52 |   | 7.30% | STOMACH UPSET: All Survivors complete a campaign without being vomited on. | L4D_ACHIEVEMENT_SURVIVE_NO_VOMIT | 
                
                    | 53 |   | 6.70% | ZOMBICIDAL MANIAC: Survive any campaign on Expert. | L4D_ACHIEVEMENT_SURVIVE_ANY_IMPOSSIBLE | 
                
                    | 54 |   | 6.40% | UNBREAKABLE: Finish a campaign without ever using a first aid kit on yourself. | L4D_ACHIEVEMENT_NO_SELF_MEDKIT | 
                
                    | 55 |   | 6.10% | Kill Bill: Have Bill sacrifice himself for the team. | L4D_ACHIEVEMENT_SACRIFICE_BILL | 
                
                    | 56 |   | 5.80% | SMASH HIT: Win a Versus campaign of Crash Course. | L4D_ACHIEVEMENT_WIN_VERSUS_GARAGE | 
                
                    | 57 |   | 5.10% | RED MIST: Kill 1000 Infected with a mounted machine gun. | L4D_ACHIEVEMENT_KILL_X_WITH_TURRET | 
                
                    | 58 |   | 4.60% | ZOMBIE GENOCIDEST: Kill 53,595 Infected. | L4D_ACHIEVEMENT_53595_INFECTED | 
                
                    | 59 |   | 4.10% | Chaos Generator: Have all 3 generators running at once in "The Sacrifice" finale. | L4D_ACHIEVEMENT_RUN_ALL_GENERATORS | 
                
                    | 60 |   | 4.00% | SAFETY FIRST: Play an entire campaign with no Survivors taking friendly fire damage. | L4D_ACHIEVEMENT_NO_FRIENDLY_FIRE | 
                
                    | 61 |   | 4.00% | SLIPPERY PULL: Smoker pull a bile-covered Survivor until you hold him during Crash Course. | L4D_ACHIEVEMENT_DRAG_BILED_SURVIVOR | 
                
                    | 62 |   | 3.80% | WIPEFEST: Your team incapacitates three Survivors within five seconds. | L4D_ACHIEVEMENT_INCAP_3_IN_5_SEC | 
                
                    | 63 |   | 3.60% | WHAT ARE YOU TRYING TO PROVE?: Survive all campaigns on Expert. | L4D_ACHIEVEMENT_SURVIVE_ALL_IMPOSSIBLE | 
                
                    | 64 |   | 3.40% | THE LITTLEST GENOCIDE: Kill 5,359 Infected in the Crash Course campaign. | L4D_ACHIEVEMENT_5359_INFECTED_GARAGE | 
                
                    | 65 |   | 3.40% | DISTINGUISHED SURVIVOR: Earn at least a Bronze medal on every official Survival level. | L4D_ACHIEVEMENT_GET_ALL_BRONZE | 
                
                    | 66 |   | 3.40% | Barrel Rolled: Kill a Special Infected with an exploding barrel. | L4D_ACHIEVEMENT_KILL_SPECIAL_WITH_BARREL | 
                
                    | 67 |   | 3.00% | JUMPIN' JACK SMASH: Pounce a Survivor for 25 points of damage in the Crash Course campaign. | L4D_ACHIEVEMENT_CAUSE_X_POUNCE_DAMAGE | 
                
                    | 68 |   | 2.90% | NOTHING SPECIAL: Survive a campaign with no Survivors taking damage from Special Infected. | L4D_ACHIEVEMENT_SURVIVE_NO_SPECIAL_DAMAGE | 
                
                    | 69 |   | 2.80% | HEROIC SURVIVOR: Earn at least a Silver medal on every official Survival level. | L4D_ACHIEVEMENT_GET_ALL_SILVER | 
                
                    | 70 |   | 2.70% | TRUCK STOP: Your team wipes all Survivors after the escape vehicle has opened in Crash Course. | L4D_ACHIEVEMENT_WIPE_ALL_AFTER_TRUCK | 
                
                    | 71 |   | 2.70% | LEGENDARY SURVIVOR: Earn a Gold medal on every official Survival level. | L4D_ACHIEVEMENT_GET_ALL_GOLD | 
                
                    | 72 |   | 2.50% | Sacrifizzle: As a Special Infected, incap someone who is trying to sacrifice themselves. | L4D_ACHIEVEMENT_VS_PREVENT_SACRIFICE | 
                
                    | 73 |   | 2.40% | 20 CAR PILE-UP: As A Tank hit 20 Survivors with a car in the Crash Course campaign. | L4D_ACHIEVEMENT_HIT_X_WITH_CAR |