Left 4 Dead 2 Cheats, Codes, Secrets and Unlocks

Unlockables

Achievements

Complete each achievement to receive the allotted gamerscore.

A RIDE DENIED (15) – Kill a Jockey within 2 seconds of it jumping on a Survivor.
A SPITTLE HELP FROM MY FRIENDS (15) – As the Spitter, spit on a Survivor being choked by a Smoker.
ACID REFLEX (15) – Kill a Spitter before she is able to spit.
ARMORY OF ONE (15) – Deploy an ammo upgrade and have your team use it.
BACK IN THE SADDLE (15) – As the Jockey, ride the Survivors twice in a single life.
BEAT THE RUSH (15) – In a Survival round, get a medal only using melee weapons.
BRIDGE BURNER (20) – Survive the Parish campaign.
BRIDGE OVER TREBLED SLAUGHTER (30) – Cross the bridge finale in less than three minutes.
BURNING SENSATION (15) – Ignite 50 Common Infected with incendiary ammo.
CACHE AND CARRY (20) – Collect 15 gas cans in a single Scavenge round.
CHAIN OF COMMAND (15) – Kill 100 Common Infected with the chainsaw.
CL0WND (15) – Honk the noses of 10 Clowns.
CLUB DEAD (15) – Use every melee weapon to kill Common Infected.
CONFEDERACY OF CRUNCHES (30) – Finish a campaign using only melee weapons.
CRASS MENAGERIE (20) – Kill one of each Uncommon Infected.
DEAD IN THE WATER (20) – Kill 10 swampy Mudmen while they are in the water.
DISMEMBERMENT PLAN (20) – Kill 15 Infected with a single grenade launcher blast.
FRIED PIPER (15) – Using a Molotov, burn a Clown leading at least 10 Common Infected.
FUEL CRISIS (15) – Make a Survivor drop a gas can during overtime.
GAS GUZZLER (20) – Collect 100 gas cans in Scavenge.
GAS SHORTAGE (20) – Cause 25 gas can drops as a Special Infected.
GONG SHOW (15) – Prove you are stronger than Moustachio.
GREAT EXPECTORATIONS (15) – As the Spitter, hit every Survivor with a single acid patch.
GUARDIN’ GNOME (30) – Rescue Gnome Chompski from the Carnival.
HEAD HONCHO (15) – Decapitate 200 Infected with a melee weapon.
HEARTWARMER (20) – In a Versus round, leave the saferoom to defibrillate a dead teammate.
HUNTING PARTY (15) – Win a game of Scavenge.
LEVEL A CHARGE (15) – Kill a Charger with a melee weapon while they are charging.
LONG DISTANCE CARRIER (15) – As the Charger, grab a Survivor and carry them over 80 feet.
MEAT TENDERIZER (20) – As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds.
MIDNIGHT RIDER (20) – Survive the Dark Carnival campaign.
PRICE CHOPPER (20) – Survive the Dead Center campaign.
QUALIFIED RIDE (15) – As the Jockey, ride a Survivor for more than 12 seconds.
RAGIN’ CAJUN (20) – Survive the Swamp Fever campaign.
ROBBED ZOMBIE (15) – Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.
RODE HARD, PUT AWAY WET (20) – As the Jockey, ride a Survivor and steer them into a Spitter’s acid patch.
SCATTERING RAM (20) – As the Charger, bowl through the entire enemy team in a single charge.
SCAVENGE HUNT (15) – Stop the enemy team from collecting any gas cans during a Scavenge round.
SEPTIC TANK (15) – Use a bile bomb on a Tank.
SHOCK JOCK (30) – Revive 10 dead Survivors with the defibrillator.
SOB STORY (30) – Navigate the sugar mill and reach the safe room without killing any Witches.
STACHE WHACKER (15) – Prove you are faster than Moustachio.
STILL SOMETHING TO PROVE (35) – Survive all campaigns on Expert.
STRENGTH IN NUMBERS (15) – Form a team and beat an enemy team in 4v4 Versus or Scavenge.
TANK BURGER (30) – Kill a Tank with melee weapons.
THE QUICK AND THE DEAD (30) – Revive 10 incapacitated Survivors while under the speed-boosting effects of adrenaline.
THE REAL DEAL (35) – Survive a campaign on Expert skill with Realism mode enabled.
VIOLENCE IN SILENCE (30) – Navigate the impound lot and reach the cemetary safe room without tripping any alarms.
WEATHERMAN (20) – Survive the Hard Rain campaign.
WING AND A PRAYER (30) – Defend yourself at the crashed airliner without taking damage.

Avatar Rewards

Unlockable Avatar Rewards can be obtained by completing each specific task listed.

Bull Shifters (Ellis) Shirt – Earned by winning 10 games of Versus
Depeche Mode (Rochelle) Shirt – Earned by rescuing Gnome Chompski from the Dark Carnival (MUST be holding Gnome in rescue vehicle when it departs)
Left 4 Dead 2 shirt: Earned by winning 10 games of Scavenge.
Med Kit – Earned by beating all five campaigns (Any Difficulty)
Zombie Hand Shirt – Earned by killing 10,000 Infected