xbox360-Left 4 Dead 2

# Avatar Awards

Successfully complete the indicated task to unlock the corresponding Avatar Award:

Bull Shifters Shirt: Win ten games of Versus.
Depeche Mode Shirt: Rescue Gnome Chompski from the Dark Carnival.
Left 4 Dead 2 Shirt: Win ten games of Scavenge.
Med Kit: Successfully complete all five campaigns.
Zombie Hand Shirt: Kill 10,000 Infected.

# Quick healing

Use an adrenaline shot, then use your medikit to heal. This takes a much less time, especially when you are dealing with a horde.
# Surviving large hordes

Find a corner, and have a melee weapon equipped. Hold RB while aiming at the approaching zombies. Note: You may get hit a few times.
# "Eat Your Brains" song in Swamp Fever: Level 1

In the bar in the abandoned town, find the jukebox, and play it to hear "Eat Your Brains" by Jonathan Coulton.
# Portal reference

In The Parish: Level 2, when you reach the bar with the jukebox inside, keep skipping through the songs to eventually hear the song "I'm Still Alive" from Portal.
# Easy "Gong Show" achievement

In Dark Carnival: Level 4, find the strength-testing mini-game in the first area. Inject adrenaline, and hit it with a melee weapon to get the "Gong Show" achievement.
# Easy "Guardin' Gnome" achievement

In Dark Carnival: Level 2, find the shooting range. Score over 500 points to make a garden gnome appear. Carry the gnome to the end of the level, and board the chopper with it at the end of Dark Carnival: Level 5 to get the "Guardin' Gnome" achievement.
# Easy "Stache Whacker" achievement

In Dark Carnival: Level 4, find the Whack-A-Mole mini-game. Get a score of 42 to get the "Stache Whacker" achievement.
# Easy "Violence In Silence" achievement

In The Parish: Level 3, when you reach the impound lot area with all the cars, just use a melee weapon to kill the Infected. The computer players will not set off an alarm. All the red cars have car alarms, so try to stay by the white cars. Once you make it past the area with all the cars without setting off an alarm, you will get the "Violence In Silence" achievement once you make it to the safe house.
# Easy "Wing And A Prayer" achievement

Note: All three other players must be bots for this trick to work. Before the alarm goes off, clear all explosive items and do not use incendiary ammo. Then, crouch in the corner near the entrance to the plane so the Infected cannot get you from behind or either side. Once the alarm is sounded and the horde start attacking, throw a Molotov to block the entrance. After that, the computer players should stand in front of you and take the damage. Just stay in the same place the entire time, and you should get the "Wing And A Prayer" achievement.

# Achievements

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Price Chopper (20 points): Survive the Dead Center campaign.
Midnight Rider (20 points): Survive the Dark Carnival campaign.
Ragin' Cajun (20 points): Survive the Swamp Fever campaign.
Weatherman (20 points): Survive the Hard Rain campaign.
Bridge Burner (20 points): Survive the Parish campaign.
Still Something To Prove (35 points): Survive all campaigns on Expert.
The Real Deal (35 points): Survive a campaign on Expert skill with Realism mode enabled.
Confederacy Of Crunches (30 points): Finish a campaign using only melee weapons.
Head Honcho (15 points): Decapitate 200 Infected with a melee weapon.
Club Dead (15 points): Use every melee weapon to kill Common Infected.
Chain Of Command (15 points): Kill 100 Common Infected with the chainsaw.
Tank Burger (30 points): Kill a Tank with melee weapons.
Shock Jock (30 points): Revive 10 dead Survivors with the defibrillator.
The Quick And The Dead (30 points): Revive 10 incapacitated Survivors while under the speed-boosting effects of adrenaline.
Armory Of One (15 points): Deploy an ammo upgrade and have your team use it.
Burning Sensation (15 points): Ignite 50 Common Infected with incendiary ammo.
Dismemberment Plan (20 points): Kill 15 Infected with a single grenade launcher blast.
Septic Tank (15 points): Use a bile bomb on a Tank.
Crass Menagerie (20 points): Kill one of each Uncommon Infected.
Dead In The Water (20 points): Kill 10 swampy Mudmen while they are in the water.
Robbed Zombie (15 points): Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.
Cl0wnd (15 points): Honk the noses of 10 Clowns.
Fried Piper (15 points): Using a Molotov, burn a Clown leading at least 10 Common Infected.
Level A Charge (15 points): Kill a Charger with a melee weapon while they are charging.
Acid Reflex (15 points): Kill a Spitter before she is able to spit.
A Ride Denied (15 points): Kill a Jockey within 2 seconds of it jumping on a Survivor.
Stache Whacker (15 points): Prove you are faster than Moustachio.
Gong Show (15 points): Prove you are stronger than Moustachio.
Guardin' Gnome (30 points): Rescue Gnome Chompski from the Carnival.
Wing And A Prayer (30 points): Defend yourself at the crashed airliner without taking damage.
Sob Story (30 points): Navigate the sugar mill and reach the safe room without killing any Witches.
Violence In Silence (30 points): Navigate the impound lot and reach the cemetary safe room without tripping any alarms.
Bridge Over Trebled Slaughter (30 points): Cross the bridge finale in less than three minutes.
Heartwarmer (20 points): In a Versus round, leave the saferoom to defibrillate a dead teammate.
Strength In Numbers (15 points): Form a team and beat an enemy team in 4v4 Versus or Scavenge.
Qualified Ride (15 points): As the Jockey, ride a Survivor for more than 12 seconds.
Back In The Saddle (15 points): As the Jockey, ride the Survivors twice in a single life.
Rode Hard, Put Away Wet (20 points): As the Jockey, ride a Survivor and steer them into a Spitter's acid patch.
Great Expectorations (15 points): As the Spitter, hit every Survivor with a single acid patch.
A Spittle Help From My Friends (15 points): As the Spitter, spit on a Survivor being choked by a Smoker.
Scattering Ram (20 points): As the Charger, bowl through the entire enemy team in a single charge.
Meat Tenderizer (20 points): As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds.
Long Distance Carrier (15 points): As the Charger, grab a Survivor and carry them over 80 feet.
Beat The Rush (15 points): In a Survival round, get a medal only using melee weapons.
Hunting Party (15 points): Win a game of Scavenge.
Gas Guzzler (20 points): Collect 100 gas cans in Scavenge.
Cache And Carry (20 points): Collect 15 gas cans in a single Scavenge round.
Scavenge Hunt (15 points): Stop the enemy team from collecting any gas cans during a Scavenge round.
Fuel Crisis (15 points): Make a Survivor drop a gas can during overtime.
Gas Shortage (20 points): Cause 25 gas can drops as a Special Infected.