OXM UK writes: "We were always slightly alarmed whenever a Metallica track cropped up in Rock Band or Guitar Hero III. They were so difficult it was like a big sign saying, 'You shall not pass!' being thrust in our faces.
Surprisingly, Guitar Hero Metallica isn't like that. Neversoft has paid close attention to the difficulty curve, allowing non-gaming metallers to progress, but still offering thrills for hardcore shredders later on.
All of the 49 tracks are available in Freeplay mode right from the start. Unlocking songs in Career mode is also much easier than previous Guitar Hero games. Instead of having to complete every set before another becomes available, you just have to earn a set number of stars. This is good because it means you'll never get stuck behind one teeth-grindingly difficult number..."