Kings of Quahog

Win a Deathmatch mode (free-for-all or as a team)

First Kill

Successfully complete your first kill of an opposing team member in Multiplayer

Ugly Tastes Terrible

Play poorly during the final showdown

Chicken Fight!

Complete the "Chicken Fight!" level

Wrecking Ball

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

Chickens In Space

Complete the "Chickens In Space" level

Santa's Sweatshop

Complete the "Santa's Sweatshop" level

Employee of the Month

Kill Vernon

Long John Peter

Complete the "Long John Peter" level

IEDead

Kill 60 enemies with grenades/explosives

No Cheese, Please

Complete the "No Cheese, Please" level

Bipolar

Switch between Brian and Stewie 10 times in Story Mode

Pussy Whipped

Complete the "Pussy Whipped" level

Head Shot

Kill an enemy with a single shot to the head

Handicapable

Complete the "Handicapable" level

Something's Amish

Complete the "Something's Amish" level

Multi-Kill

Perform a multi-kill with a melee weapon

It's All Greek To Me

Complete the "It's All Greek To Me" level

We Be Clubbing

Defeat 10 enemies with a melee weapon

One Shot Kills

Successfully kill an enemy with one shot

Multi-kill with a grenade

Perform a multi-kill with a grenade

How Do I Jump?

Kill yourself with a grenade or satchel charge

Day Labor

Destroy all of the piñatas in the "It's All Greek to Me" level