Chile will face Germany or Mexico in Sunday's final in St Petersburg after a dramatic victory over the European champions ended 0-0 after 120 minutes before Claudio Bravo saved three penalties in the shoot-out in Kazan.
"We were very happy, and we will try to play the final as we can.
"The only way we can compete is to play like today, always on the edge, we have to take chances and make goals, we can not lose our intensity and concentration if we do not win.
"Claudio was amazing and the penalty takers were amazing and I think we deserve to be in the final. Claudio and the goalkeeping coach had studied the penalty takers."
Bravo praised the effort of his team-mates.
"This team never gives up. We were convinced of our quality," said Bravo.
Claudio Bravo of Chile celebrates with his team mates after the penalty shoot out during the FIFA Confederations Cup Russia 2017 Semi-Final between Portugal and Chile at Kazan Arena on June 28, 2017 in Kazan, Russia.
Image credit: Eurosport
"We are celebrating, but looking at our huge effort, with many players with cramp and wear."
Portugal coach Fernando Santos pointed out that the same three players who missed on Wednesday all took penalties and converted when his side beat Poland in their Euro 2016 quarter-final. "On that occasion, they were heroes," he said.