Complex sentence: In an era of sound-and-lookalike metal bands, Crimson Glory's goal was to be immediately identifiable from the others, so they wore full-face metallic silver masks on-stage, as well as for all photo shoots and public appearances.
Split into simpler sentences: In an era of sound-and-lookalike metal bands, Crimson Glory's goal was to be immediately identifiable from the others, so they wore full-face metallic silver masks. They used them on-stage, as well as for all photo shoots and public appearances.