Wow, those french guys really were something! "Coup de Metal" and "Attaque" (especially) are indeed great classic heavy metal albums! They still sound fresh and enjoyable after all these years, thanks to quality songwriting and performances, a kickass, distinctive singer, impressive production ("Attaque" sounds GOOD!), and well, french lyrics, something you don't hear very often, especially in a metal album. Very lively, pleasant and unique sound, something you'd want to listen to again!
Mind you, I don't listen to heavy metal nearly as much as I did many years ago, and I've grown tired of hearing so many unremarkable, unoriginal albums that sound all the same, but H-Bomb are always a breath of fresh air!