Repeated battles and repeated defeats, repeated battles and repeated defeats.
The whole army was wiped out.
All bets are off. If you make one wrong move in chess, you will lose the whole game.
If you want to fail completely, describe failure as out of control.
Halberd: An ancient weapon. The broken halberd sank into the sand. This was described as a great failure.
Fiasco, suffer great failure and loss.
Frustrated, frustrated. Describe the loss of confidence and low morale because of failure or failure.
This is eight characters:
One false move may lose the game. Originally, the key step in chess was not well taken, and the whole game was lost. Metaphorically, a problem that is decisive to the overall situation is not handled properly, which leads to the overall failure.
Eight-character is a little hard to find, that's all.