This is the final — we have to fight with everything we've got.
Tips
history
From 《史记·淮阴侯列传》 (Han dynasty): General Han Xin deliberately drew up his troops with a river at their backs, cutting off retreat, so soldiers had to fight to the death. They won against a Zhao force ten times their size.
usage
Implies stakes so high that failure means ruin. Fits final games, critical negotiations, startup pivots. The tone is determined, not reckless.
