"There has been a lot of criticism and people had written the tour off after two matches".
"And that's been challenging".
"We came here knowing it would be hard, the challenge ahead of us is massive".
We have just got to make sure we put that work in. The home sides had better man the ack ack guns because the Lions bombardment will keep on raining down out of the lights.
"And sometimes that brings out the best in me as a competitor in sport".
The Lions will need to show against the Crusaders that they have more in reserve, and Gatland is insistent that they do.
Gatland believes the Lions can now push their tour onto new levels after securing a hugely-important and morale-boosting victory.
The Crusaders were unbeaten in 2017 and were viewed by many as the unofficial fourth test.
Scrumhalf Conor Murray and Farrell both sent strong messages that they should be the starting Lions halfback combination for the first test in Auckland on June 24 with their attacking kicking game putting vast pressure on the Crusaders.
Gatland also revealed he is planning to invite the tour captain Sam Warburton to prove his fitness against the Highlanders in Dunedin on Tuesday, with the Wales flanker having been sidelined for the past week with a strained ankle.
"At this point I can tell you now, he's missed a couple of days' training, it's not a long-term issue".
'And they'll just go through the protocols.
"We see the next four matches as a way to measure where we're going".
On a chip and chase, down the left flank, Hogg ran straight into the raised elbow of the retreating Conor Murray.
'And he was looking unsafe, on outside breaks and things.
His influence in the back-row has never been doubted, but injury has often plagued him and slowed his progress.
But a victory born of a huge defensive effort and the nearly unerring boot of Farrell - the one kick he missed looked from TV pictures to have gone over - will give them a major boost as they head to Dunedin to face the Otago Highlanders on Tuesday.
The veteran loose forward, who was named in the All Blacks squad despite his lack of recent game time due to knee surgery, has declared himself fit to play against Samoa next Friday, if selected.
"But the Crusaders are on a roll, full of confidence at the moment and full of All Blacks".
Asked if he learned anything new from the Lions' performance, Robertson said: "No".
And despite only scoring five tries for his club during the 2016/17 campaign, the 25-year-old headed to New Zealand on a high after helping them emerge victorious in the Champions Cup play-offs.
"To be fair, to go to New Zealand and play them in their own back-yard is always going to be tough, and the rest of these games leading into the Test matches are also going to be hard".