Full list of all 101 Left 4 Dead 2 achievements. It takes around 80-100 hours to unlock all of the achievements in the base game on Windows.
The base game contains 52 achievements, and there are 7 DLC packs containing 49 achievements.
Plays games with free weekend players and helps them survive a campaign.
Spread cheer by helping a free holiday player survive a campaign.
Survive all campaigns on Expert.
Survive a campaign on Expert skill with Realism mode enabled.
Revive 10 incapacitated Survivors while under the speed-boosting effects of adrenaline.
Revive 10 dead Survivors with the defibrillator.
Cause 25 gas can drops as a Special Infected.
In a Survival round, get a medal only using melee weapons.
As the Jockey, ride the Survivors twice in a single life.
Kill 15 Infected with a single grenade launcher blast.
Using a Molotov, burn a Clown leading at least 10 Common Infected.
In a Versus round, leave the saferoom to defibrillate a dead teammate.
As the Charger, bowl through the entire enemy team in a single charge.
Form a team and beat an enemy team in 4v4 Versus or Scavenge.
As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds.
Collect 100 gas cans in Scavenge.
As the Charger, grab a Survivor and carry them over 80 feet.
Collect 15 gas cans in a single Scavenge round.
Cross the bridge finale in less than three minutes.
Finish a campaign using only melee weapons.
Defend yourself at the crashed airliner without taking damage.
Rescue Gnome Chompski from the Carnival.
As the Spitter, spit on a Survivor being choked by a Smoker.
Stop the enemy team from collecting any gas cans during a Scavenge round.
Make a Survivor drop a gas can during overtime.
Win a game of Scavenge.
As the Jockey, ride a Survivor and steer them into a Spitter's acid patch.
As the Jockey, ride a Survivor for more than 12 seconds.
Navigate the sugar mill and reach the safe room without killing any Witches.
Kill a Jockey within 2 seconds of it jumping on a Survivor.
Kill a Charger with a melee weapon while they are charging.
As the Spitter, hit every Survivor with a single acid patch.
Kill a Tank with melee weapons.
Ignite 50 Common Infected with incendiary ammo.
Kill 10 swampy Mudmen while they are in the water.
Prove you are stronger than Moustachio.
Honk the noses of 10 Clowns.
Prove you are faster than Moustachio.
Survive the Parish campaign.
Navigate the impound lot and reach the cemetery safe room without tripping any alarms.
Use every melee weapon to kill Common Infected.
Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.
Survive the Hard Rain campaign.
Kill a Spitter before she is able to spit.
Kill one of each Uncommon Infected.
Survive the Swamp Fever campaign.
Use a bile bomb on a Tank.
Kill 100 Common Infected with the chainsaw.
Survive the Dark Carnival campaign.
Deploy an ammo upgrade and have your team use it.
Decapitate 200 Infected with a melee weapon.
Survive the Dead Center campaign.
Kill a Tank only with damage from the original Survivors.
As the Charger, grab a Survivor and crash them through 8 chairs at the wedding.
Play 5 full games of Scavenge on The Port.
Knock off the heads of 18 infected with the golf club.
Play 6 Mutations.
Using the M60, kill 25 infected without letting go of the trigger.
Open 5 foot lockers.
Collect 10 items dropped by a Fallen Survivor.
Play the new Midnight Riders song on a jukebox.
Survive The Passing Campaign.
Kill a Special Infected with an exploding barrel.
As a Special Infected, incap someone who is trying to sacrifice themselves.
Have all 3 generators running at once in "The Sacrifice" finale.
Have Bill sacrifice himself for the team.
Complete "The Sacrifice".
Survive the Cold Stream campaign on any difficulty.
Play a Versus game on Dead Air from start to finish.
Collect three gifts dropped by Special Infected in Versus Mode.
Kill 53,599 infected. You made sure the dead won't rise anymore!
As the Hunter, land a 25 damage pounce.
Destroy 20 gascans as the Spitter.
Survive for 10 minutes on any official map in Versus Survival.
Earn a gold medal on every official survival map.
Earn a silver medal on every official survival map.
Earn a bronze medal on every official survival map
Survive for 30 minutes on any official survival map.
Instantly kill a Survivor as the Charger.
As the Spitter, spit on a Survivor who is pinned by a Charger.
As the Boomer, vomit on a Survivor without having direct line of sight with them.
As the Spitter, spit on a Survivor who is pinned by a Hunter.
Kill the Witch bride with a single shotgun blast on expert difficulty.
Escape Liberty Mall's Atrium before the first Tank appears
On the concert finale, survive until the helicopter arrives without leaving the stage
Complete The Last Stand campaign in 13 minutes or less, without any Survivors dying.
Rescue three Survivors from a single rescue closet.
Revive an incapacitated teammate while a Tank is nearby.
Kill 20 Jockeys with the shovel or pitchfork.
Destroy a Tank's rock in mid-air.
Kill a Witch using only a sharp melee weapon, without anyone getting incapacitated or killed.
With a sharp melee weapon, cut a Smoker's tongue before he ensnares you.
Kill a pouncing Hunter with a shotgun.
Survive The Last Stand campaign on Expert Realism.
Discover the hidden room in the Last Stand campaign
Survive The Last Stand campaign on any difficulty.
Find the golden crowbars hidden in the Left 4 Dead 1 survival maps.
Earn a gold medal on any official survival map.
Earn a silver medal on any official survival map.
Earn a bronze medal on any official Survival map.
If you are reading this achievement, Gabe Newell has successfully launched Gnome Chompski into space.