No Place Like Home

You completed the "No Place Like Home" level

Ugly Tastes Terrible

You've been defeated by the T-Rex

Chicken Fight!

You completed the "Chicken Fight!" level

Wrecking Ball

You smashed your opponent into something 20 times in the "Chicken Fight!" level

Chickens In Space

You completed the "Chickens In Space" level

Teabag a D-Bag

You taunted a dead opponent with Quagmire in Multiplayer

Help From My Friends

You used the collectible special inventory items 25 times in Story Mode

Scorched Earth

You burned the Amish pot fields

Pervert

You hung around the room with Quagmire in a baby costume for 30 seconds

Stewie-nator

You killed 500 enemies using Stewie

Bestest Infiltrator

Your team won an Infiltration map

Roadhouse

You've meleed 3 members of the opposing team in Multiplayer

Santa's Sweatshop

You completed the "Santa's Sweatshop" level

Justified

You killed 500 enemies using Brian

Penny Pincher

You've successfully collected $50,000

Employee of the Month

You've successfully killed Vernon

Long John Peter

You completed the "Long John Peter" level

Boom Headshot

You've killed 75 enemies with headshots

We Be Clubbing

You defeated 10 enemies with a melee weapon

No Cheese, Please

You completed the "No Cheese, Please" level

IEDead

You've killed 60 enemies with grenades/explosives

Pussy Whipped

You completed the "Pussy Whipped" level

Handicapable

You completed the "Handicapable" level

Something's Amish

You completed the "Something's Amish" level

It's All Greek To Me

You completed the "It's All Greek To Me" level

Multi-Kill

You successfully performed a multi-kill with a melee weapon

Day Labor

You've destroyed all of the piñatas

Bipolar

You've switched between Brian and Stewie 10 times

Multi-kill with a grenade

You successfully performed a multi-kill with a grenade

Head Shot

You got your first head shot

One Shot Kills

You've killed an enemy with one shot

Lockdown

You've shut out the other team from scoring in Capture the Greased-Up Deaf Guy

Grease Can't Save You Now

Your team won a Capture the "Greased-Up Deaf Guy" match

Shut Up Meg

You killed Meg during a Multiplayer Match

How Do I Jump?

You killed yourself with a grenade or satchel charge

Teabaggin'

You've successfully completed a taunt 25 times

Bird is the Word

You taunted 5 times in a row with Peter

Kings of Quahog

You have won a Deathmatch mode (free-for-all or as a team)

The Cleaner

You got a 10 kill streak in Deathmatch

First Kill

You completed your first kill of a member of the opposing team in Multiplayer

Mr. Unpopular

You selected Meg as a character for a Multiplayer Match