If the requirements are not high, you can also use the following idioms.
Spare no effort (note: leave: stay; Remaining power: remaining power. Take out all your strength and don't reserve any. )
Do one's best (note: do one's best: exhaust. Try your best. )
Do your best (note: use it all; Tired: exhausted. Do your best, do your best. Describe the effort. )
They build nests (note: they nest; Nest: A nest. Metaphor means that the enemy sends out all his troops to invade. )
Come out from the whole city (note: the whole city. The whole city went out together. There are many metaphors. )
Go all out (note: go: go. Go all out. )