The tracks are all rather fun, and pretty tough to boot. The opening to Thunderstruck is reminiscent to Through the fire and the flames. It seems more like a concert, well considering that it's based off one and that the crowd noise is amped up. The achivements are meh since there's only 250 points to get and it's built off the Rock Band 1 engine which seems kind of like a downgrade, imo.
If you have 40 bucks lying around, I'd say get it and then just export them into rock band 2, as the disc itself isn't really worthwhile.