The All Whites have impressively completed half a job.
They've reached "half-time" against Peru at 0-0. But the second leg of this World Cup tie will take reserves of energy, composure and intestinal fortitude that most of them would never have drawn upon before.
Peru will come charging out of the blocks in Lima. From the first whistle, their slick passing game will be in evidence as they seek a goal to settle their nerves.
Roared on by a passionate and vociferous home crowd, they'll want nothing more than to impose themselves and turn that dominance into goals.
The key for New Zealand is soaking up the inevitable early onslaught without resorting to parking a big white bus in front of their goal.