Family Guy: Back to the Multiverse Cheats - PlayStation 3

Cheat Mode
Enter the following codes at the "Cheat" menu. Note that you won't be able to save the game when cheats are active.

RMTE - Unlock all levels.
CAST - Unlock all characters.
WRDB - Unlock all costumes.
MNKY - One shot kills.
DKSD - Unlock all weapons in multiplayer.
GTSM - Unlock all weapons in singleplayer.
PWTR - Maximum money.
GGTY - Infinite ammo.

Achievements (Steam)
Bestest Infiltrator - Win an Infiltration map.
Big Dipper - Earn all 21 stars in challenge mode.
Bipolar - Switch between Brian and Stewie 10 times in Story mode.
Bird Is The Word - Taunt 5 times in a row with Peter.
Boom Headshot - Kill 75 enemies with headshots.
Bunch of Chumps - Survive 15 waves of enemies in Multiverse Madness.
Cartoon Apocalypse - Survive 30 waves in Multiverse Madness.
Chicken Fight! - Complete the "Chicken Fight!" level.
Chickens In Space - Complete the "Chickens In Space" level.
Day Labor - Destroy all of the piñatas.
Employee of the Month - Kill Vernon.
First Kill - Successfully complete your first kill of a member of the opposing team in Multiplayer.
Grease Can't Save You Now - Win a Capture the "Greased-Up Deaf Guy" match.
Handicapable - Complete the "Handicapable" level.
Head Shot - Kill an enemy with a single shot to the head.
Help From My Friends - Acquire any collectible special inventory items and use it 25 times in Story Mode.
How Do I Jump? - Kill yourself with a grenade or satchel charge.
IEDead - Kill 60 enemies with grenades/explosives.
It's All Greek To Me - Complete the "It's All Greek To Me" level.
Justified - Kill 500 enemies using Brian.
Kings of Quahog - Win a deathmatch mode (free-for-all or as a team).
Little Dipper - Earn 10 stars in challenge mode.
Lockdown - Shut out the other team from scoring in Capture the "Greased-Up Deaf Guy".
Long John Peter - Complete the "Long John Peter" level.
Mort Will Now Lend You Credit - Buy everything available in the Store.
Mr. Unpopular - Select Meg as a character for a Multiplayer match.
Multi-kill - Perform a multi-kill with a melee weapon.
Multi-kill with grenade - Perform a multi-kill with a grenade.
No Cheese, Please - Complete the "No Cheese, Please" level.
No Place Like Home - Complete the "No Place Like Home" level.
Obsessed - Complete all secondary objectives.
One Shot Kills - Successfully kill an enemy with one shot.
Penny Pincher - Successfully collect $50,000.
Pervert - Hang around Quagmire in a baby costume for 30 seconds.
Pussy Whipped - Complete the "Pussy Whipped" level.
Roadhouse - Kill 3 members of the opposing team with a melee attack before you die in Multiplayer.
Santa's Sweatshop - Complete the "Santa's Sweatshop" level.
Scorched Earth - Burn the Amish pot fields.
Shut Up Meg - Kill Meg during a Multiplayer Match.
Something's Amish - Complete the "Something's Amish" level.
Stewie-nator - Kill 500 enemies using Stewie.
Teabag a D-Bag - Taunt a dead opponent with Quagmire in Multiplayer.
Teabaggin' - Successfully perform a taunt 25 times.
The Cleaner - Get a 10 kill streak in Deathmatch.
There Is No Cake - Unlock all other Achievements found in the game.
Ugly Tastes Terrible - Play poorly during the final showdown.
We Be Clubbing - Defeat 10 enemies with a melee weapon.
Wrecking Ball - Smash your opponent into something 20 times in the "Chicken Fight!" level.