- Bonus songs
Successfully complete the indicated task in Career mode to unlock the corresponding song:

'Broken, Clear & Scarred'	Successfully complete 'The Thing That Should Not Be' song with any instrument.
'Cyanide'	Successfully complete 'The Thing That Should Not Be' song with any instrument.
'My Apocalypse'	Successfully complete 'The Thing That Should Not Be' song with any instrument.

- Trophies
Successfully complete one of the following tasks to get a trophy:

Bronze Trophies
2 X 4	Gain a band Hot Streak (4 player band).
Kirk Hammett	Finish the career as the guitarist.
Reload	Download a song from GHTunes.
The Struggle Within	Finish a song in a band in Quickplay or Career (4 players).
Hero of the Day	Finish a song on Expert + in Quickplay or Career (drums only).
The Memory Remains	Watch a Metallifacts video.
Robert Trujillo	Finish the career as the bassist.
Lars Ulrich	Finish the career as the drummer.
Ride the Lightning	All band members trigger star power simultaneously (4 player band).
Blitzkrieg	Be victorious in an online Band v Band match (8 players).
One	Finish a song with any instrument on Hard or Expert in local Quickplay or Career.
Wherever I May Roam	Finish a song in every venue.
The Unforgiven	Be victorious in an online Face-Off match.
Seek & Destroy	Play 20 online matches.
The Four Horsemen	Finish a song with all band members on expert in Quickplay or Career (4 player band).
Better Than You	Be victorious in an online Pro Face-Off match.
The More I See	Finish the Tutorials.
James Hetfield	Finish the career as the vocalist.
Silver Trophies
Nothing Else Matters	Finish the career in a band (2-4 player band).
Metallica	Finish any instrument career on Expert (Guitar, Bass, Vocals, Drums or Band).
...And Justice for All	Gain 100 stars in Band Career or any single instrument Career.
Metal Militia	100% a song (4 player band).
The Ecstacy of Gold	Gain $15,000.
Gold Trophies
Holier Than Thou	Finish all instrument careers.
Platinum Trophies
Platinum Artist	Gain all of the Bronze, Silver and Gold Trophies in Guitar Hero Metallica.

Bronze Trophies
Cure	Recover from a poor performance in Quickplay or Career.
Black	Be victorious in an online battle match with the Fade to Black power up.
King Diamond	Rock out as King Diamond.
Disposable Heroes	Create a new custom rocker.
Master of Puppets	Gain the highest individual score on a song in a band (4 player band).
Astronomy	Hit every star phrase in the song Orion.
The Unforgiven III	Be victorious in an online Pro Face-Off match by 25,000 points or more.
Some Kind of Monster	Perform as the guitarist.
The Unforgiven II	Be victorious in an online Face-Off match by 25,000 points or more.
Fixxxer	Create a new custom instrument (guitar, drums, mic).
Motorbreath	Perform as the vocalist.
Lemmy	Rock out as Lemmy.
The House Jack Built	Finish a song in every In-the-Round venue.
Stone Dead Forever	Finish a song at The Stone venue.
Trapped Under Ice	Finish a song at the Ice Cave venue.
Blackened	Create a new custom tattoo.
Eye of the Bekeep pusheder	Create a new custom band logo.
Damage Inc.	Perform as the drummer.
Invisible Kid	Perform as the bassist.
Silver Trophies
Stone Cold Crazy	Realize 65,000 on the song Stone Cold Crazy as the vocalist.
Enter Sandman	Realize 330,000 on the song Enter Sandman on guitar.
Green Hell	Drum every green note and finish the song Blood and Thunder with the rock meter in green.
Creeping Death	Realize 575,000 on the song Creeping Death as the guitarist.
Fight Fire with Fire	Realize 340,000 on the song Fight Fire with Fire as the bassist.
Dyer's Eve	Realize 450,000 on the song Dyer's Eve as the drummer.
Battery	Realize 1,000,000 on the song Battery as a band (4 players).

- Bonus instruments
Successfully complete the indicated task in Career mode to unlock the corresponding instrument:

Klown bass	Get 45 stars on bass.
Mean Green bass	Get 25 stars on bass.

- Activate Cheats
At the main menu, select 'Options', 'Cheats', 'Enter New Cheat', then enter one of the following codes to unlock the corresponding cheat option. If you entered the code correctly, a message will appear.

Always Drum Fill Push Red(3), Blue(2), Green(2), Yellow.
Gem Color Push Blue, Red(2), Green, Red, Green, Red, Yellow.
Line 6 Effects Push Green, Red, Yellow, Blue, Red, Yellow, Blue, Green to unlock additional Line 6 effects in the Music Studio.
Metallica Costumes Push Green, Red, Yellow, Blue(2), Yellow, Red, Green.
Always Slide Push Green(2), Red(2), Yellow, Red, Yellow, Blue. This mode turns all guitar notes (not chords) into touch pad sliding notes connected by purple lines. It has no effect online. Notice	This code prevents trophies from being earned.
Star Color Push Red(2), Yellow, Red, Blue, Red, Red, Blue.
Invisible Rocker Push Green, Red, Yellow(3), Blue(2), Green.
Air Instruments Push Red(2), Blue, Yellow, Green(3), Yellow.
Performance mode Push Yellow(2), Blue, Red, Blue, Green, Red(2).
Hyperguitar, Hyperbass, and Hyperdrums Push Green, Blue, Red, Yellow(2), Red, Green(2).
Flame Color Push Green, Red, Green, Blue, Red(2), Yellow, Blue.
Auto Kick Push Yellow, Green, Red, Blue(4), Red. This mode automatically plays the bass pedal for the drummer. It has no effect online. Notice	This code prevents trophies from being earned.
Black Highway Push Yellow, Red, Green, Red, Green, Red(2), Blue.
Vocal Fireball Push Red, Green(2), Yellow, Blue, Green, Yellow, Green. 100%; background

- Bonus characters
Successfully complete the indicated task in Career mode to unlock the corresponding character:

Kirk Hammet	Get 100 stars on guitar.
Zach Harmon	Get 100 stars in a band.
James Hetfield (Zombie)	Get 200 stars on vocals.
Lemmy	Successfully complete the 'Ace Of Spades' song with any instrument.
Marcus Fretshreder	Get 55 stars on guitar.
Riki Lee	Get 55 stars on vocals.
King Diamond	Successfully complete the 'Evil' song with any instrument.
James Hetfield	Get 100 stars on vocals.
Zach Harmon (Classic)	Get 150 stars in a band.
Rob Trujillo	Get 100 stars on bass.
Lars Ulrich (Zombie)	Get 200 stars on drums.
Rob Trujillo (Classic)	Get 150 stars on bass.
Matty Cannz	Get 55 stars on drums.
Lars Ulrich (Classic)	Get 150 stars on drums.
Lars Ulrich	Get 100 stars on drums.
Kirk Hammet (Classic)	Get 150 stars on guitar.
Shirley Crowley	Get 55 stars on bass.
Kirk Hammet (Zombie)	Get 200 stars on guitar.
Rob Trujillo (Zombie)	Get 200 stars on bass.
James Hetfield (Classic)	Get 150 stars on vocals.
Zach Harmon (Zombie)	Get 200 stars in a band.

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