public function get_image( $size = array(), $unused = null ) {

		$id     = $this->get( 'id' );
		$img_id = get_post_thumbnail_id( $id );

		$size = empty( $size ) ? array( 380, 380 ) : $size;

		/**
		 * Filters the size used to retrieve an achievement image.
		 *
		 * @since 6.0.0
		 *
		 * @param int[] $size Dimensions of the image passed as [ width, height ] (in pixels).
		 */
		$size = apply_filters( 'llms_achievement_image_size', $size );

		if ( ! $img_id ) {
			$src = llms()->achievements()->get_default_image( $id );
		} else {
			list( $src ) = wp_get_attachment_image_src( $img_id, $size );
		}

		/**
		 * Filter the image source URL for the achievement.
		 *
		 * @since 6.0.0
		 *
		 * @param string                $src         Image source URL.
		 * @param LLMS_User_Achievement $achievement The achievement object.
		 * @param int[]                 $size        Dimensions of the image to return passed as [ width, height ] (in pixels).
		 */
		return apply_filters( 'llms_achievement_get_image', $src, $this, $size );

	}