Have Bill sacrifice himself for the team.
Have all 3 generators running at once in "The Sacrifice" finale.
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.
Survive all campaigns on Expert.
Survive a campaign on Expert skill with Realism mode enabled.
Kill a Tank with melee weapons.
Open 5 foot lockers.
Survive The Passing Campaign.
Play the new Midnight Riders song on a jukebox.
Ignite 50 Common Infected with incendiary ammo.
Using the M60, kill 25 infected without letting go of the trigger.
In a Survival round, get a medal only using melee weapons.
Kill 100 Common Infected with the chainsaw.
Defend yourself at the crashed airliner without taking damage.
As the Charger, bowl through the entire enemy team in a single charge.
Make a Survivor drop a gas can during overtime.
Prove you are stronger than Moustachio.
Survive the Swamp Fever campaign.
Finish a campaign using only melee weapons.
Kill 10 swampy Mudmen while they are in the water.
Rescue Gnome Chompski from the Carnival.
Win a game of Scavenge.
Stop the enemy team from collecting any gas cans during a Scavenge round.
As the Jockey, ride a Survivor for more than 12 seconds.
As the Jockey, ride the Survivors twice in a single life.
As the Spitter, hit every Survivor with a single acid patch.
Honk the noses of 10 Clowns.
Using a Molotov, burn a Clown leading at least 10 Common Infected.
Use every melee weapon to kill Common Infected.
Prove you are faster than Moustachio.
Survive the Parish campaign.
Kill a Jockey within 2 seconds of it jumping on a Survivor.
Navigate the impound lot and reach the cemetery safe room without tripping any alarms.
Survive the Hard Rain campaign.
Navigate the sugar mill and reach the safe room without killing any Witches.
Kill one of each Uncommon Infected.
Use a bile bomb on a Tank.
Survive the Dark Carnival campaign.
Kill 15 Infected with a single grenade launcher blast.
Decapitate 200 Infected with a melee weapon.
Deploy an ammo upgrade and have your team use it.
Survive the Dead Center campaign.
Kill a Spitter before she is able to spit.
Complete "The Sacrifice".
Kill a Special Infected with an exploding barrel.
As a Special Infected, incap someone who is trying to sacrifice themselves.
Revive 10 dead Survivors with the defibrillator.
Revive 10 incapacitated Survivors while under the speed-boosting effects of adrenaline.
Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.
Kill a Charger with a melee weapon while they are charging.
Cross the bridge finale in less than three minutes.
In a Versus round, leave the saferoom to defibrillate a dead teammate.
As the Jockey, ride a Survivor and steer them into a Spitter's acid patch.
As the Spitter, spit on a Survivor being choked by a Smoker.
As the Charger, grab a Survivor and carry them over 80 feet.
Collect 100 gas cans in Scavenge.
Collect 15 gas cans in a single Scavenge round.
Cause 25 gas can drops as a Special Infected.
As the Charger, grab a Survivor and crash them through 8 chairs at the wedding.
Collect 10 items dropped by a Fallen Survivor.
Play 6 Mutations.
Knock off the heads of 18 infected with the golf club.
Kill a Tank only with damage from the original Survivors.
Play 5 full games of Scavenge on The Port.
