Opponents Uruguay are in the same position following their shock 3-1 defeat to unfancied Costa Rica, meaning the loser at the Arena Corinthians almost certainly will not make it out of Group D.
"We have to stay positive," the forward, now at his third World Cup, said. "We obviously need the three points now against Uruguay and we go into that game confident.
"We will take a few of the positives from the game and hopefully that can help us there.
"I think it will [feel like a do-or-die game]. We know if we lose the game we are more or less out, so we have to be positive and go at it in some ways the way we did.
"We went at Italy, I think we lost the two goals at a bad time, really, and we couldn't quite recover from the second one. But we will certainly give it a good go."
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