Brutal Legend is a metal game. So it's achievements and trophies? Also metal.
Take for instance the game's version of Heavy Metal Flu: Six Degrees of Schafer.
"The "Six Degrees of Schafer" Achievement/Trophy is rewarded when you play with or against Tim Schafer in Brutal Legend's epic multiplayer mode. The achievement is also viral, meaning that once you play Tim (or someone who has played Tim), you then have the achievement, and then when you play someone else, they get it, and then when that person plays someone else, they get it, etc etc, rinse, repeat…. Think of it like the flu, a heavy metal flu if you will… "
Note that the Playstation 3 version has one more trophy than the 360 version has achievements. It's called Rock God, earned for collecting all PS3 trophies.
360 PS3 Name 15 Bronze Got a Car and a Date Completed "Welcome to the Age of Metal" 15 Bronze Start a Revolution Completed "Exploited in the Bowels of Hell" 15 Bronze Thick as a Baby's Arm Completed "Lair of the Metal Queen" 15 Bronze Hair Remover Completed "Battle for Bladehenge" 15 Bronze French Kiss Instructor Completed "Pilgrimage of Screams" 15 Bronze Chicks n' Booze n' Stuff Completed "Sanctuary of Sin" 15 Bronze Ran to the Hills Completed "It's Raining Death" 15 Bronze Fistfull of Fog Completed "Dry Ice, Wet Graves" 15 Bronze No More Tears Completed "Sea of Black Tears" 25 Silver Groupie Completed Campaign mode on Easy 25 Silver Roadie Completed Campaign mode on Normal 25 Silver Legend Completed Campaign mode on Brutal 20 Bronze Overkill Completed all hunting secondary missions 20 Bronze Squeal Like a Chicken Completed all racing secondary missions 20 Bronze Protector Completed 20 ambush, outpost defence, or mortar secondary missions 50 Gold Metal God Achieved 100% completion on the stats screen 10 Bronze Serpent Samaritan Freed 40 Bound Serpents 15 Bronze Serpent Spanker Freed 80 Bound Serpents 25 Silver Serpent Savior Freed all 120 Bound Serpents 5 Bronze One Hit Wonder Purchased 1 upgrade in the Motor Forge 25 Silver Loyal Customer Purchased all upgrades in the Motor Forge 20 Bronze Virtuoso Learned all guitar solos 20 Bronze Tourist Viewed all vistas 20 Bronze Now You Must Tell the Tale Viewed all Legends 20 Bronze Voices From Beyond Unlocked all songs in the Mouth of Metal 20 Bronze Flowerslave Summoned all Motor Forges 10 Bronze Practice Bloody Practice Won an AI Stage Battle - any difficulty 20 Bronze Iron Fist Won an AI Stage Battle - Brütal difficulty 10 Bronze Victör Won a ranked multiplayer match 20 Silver Subjügator Won 10 ranked multiplayer matches 50 Gold Cönquerer Won 50 ranked multiplayer matches 20 Bronze Master of the Flame Double Teamed with every Ironheade unit 20 Bronze Master of the Tear Double Teamed with every Drowning Doom unit 20 Bronze Master of the Blood Double Teamed with every Tainted Coil unit 20 Bronze Armchair General Won a Stage Battle by yourself against the AI without attacking 30 Silver favoured Acquired 3,000 Fire Tributes 30 Silver Sellout Spent 250,000 fans - any mode 20 Bronze Some Demon Flesh on your Bumper Slayed 150 enemies with the Deuce - any mode 30 Silver I've never touched an axe before Personally smote 300 enemies - any mode 10 Bronze Silence, groundwalker! Gained 5 or more seconds of hang time in a single jump - any mode 15 Bronze Six Degrees of Schafer*** Played with or against another player who has this Achievement 15 Bronze Ringleader Trapped 15 enemies in one ring of fire with the Fire Baron's Double Team 15 Bronze Painkiller Killed 25 enemies with the grinder of one Rock Crusher 15 Bronze Dollpocalypse Hit 6 enemies with the explosion from a Brood's Double Team 15 Bronze Euthanasia Hit 15 enemies with one Agony Ball using the Pain Lifter's Double Team 15 Bronze Death From Above Killed 20 enemies with one Bleeding Death 15 Bronze Coolest Thing Ever Jumped over a Hextadon in the Deuce 15 Bronze Beast Master Rode every animal in the world 50 Silver Boar Bather Rode a Razorfire Boar into the Sea of Black Tears and live to tell the tale. 20 Bronze Quill Tosser Killed a Tollusk using only Ground Urchins
N/A Platinum Rock God Got all PS3 trophies