Archives.php only shows content of type ‘post’, but you can alter it to include custom post types. Add this filter to your functions.php file.

[code lang=”php”]
function add_custom_types_archive( $query ) {
if( is_category() || is_tag() &&
empty( $query->query_vars[‘suppress_filters’] ) ) {
$query->set( ‘post_type’, array(
 ‘post’, ‘your-custom-post-type-here’
            ));
      return $query;
    }
}
add_filter( ‘pre_get_posts’, ‘add_custom_types_archive’ );
[/code]