Edited by Kent McClard, it was usually published quarterly and the cover price was always low compared to other major zines. This helped increase circulation. The zine contained letters from readers, reviews of music and zines, and band interviews. HeartattaCk would not review anything with a barcode, which angered some in the underground scene. The "H" and "C" were emphasized in the zine's title; HC is a common abbreviation for hardcore music.
Regular and occasional writers for HeartattaCk included: