Guitar Hero: Metallica
51 Achievements
112-136h
PS3
The Four Horsemen
Complete a song with all band members on expert in Quickplay or Career (4 player band)
1.7%
How to unlock the The Four Horsemen achievement in Guitar Hero: Metallica - Definitive Guide
This can be a pain if you and your partner's are not good at expert. If this is the case then I once again suggest that you play "Stone Cold Crazy" as it is very short and easy. Once the song is complete, you will have this trophy.