When it came to the second half, everyone went all out to destroy as many supply carts as possible. They wouldn't be able to deal much damage to the Herald, anyway. The bonus scores for hitting the Herald didn't have a requirement. They would still get the bonus scores even if they caused only 1 damage.
Hence, the five who had Hope's Sanctification helped the others to destroy the supply carts. Those five destroyed only eight supply carts. After that, they helped deal damage to the supply carts but left the finishing blow to the others.
Jack used his Lightning God Barrage and Lightning God Incarnation here. He destroyed eight supply carts in a short time with those two divine skills. He then helped the others to destroy as many supply carts as possible.
