"We need to stay united and not lose our focus. We are a compact team and we know that when we play together we get results."
"Brazil are not weak, it's just that every team here wants to Nike Sneakers High go as far as possible, we've seen that since the start of the World Cup," Armero told reporters.
By contrast, Colombia have exceeded all expectations in their first World Cup since 1998, winning all four of their games and scoring 11 goals.
Despite topping Group A and reaching the last eight, the host nation have struggled to live up to their billing as tournament favourites, failing to score against Mexico in their second game and only overcoming Chile in the round of 16 on penalties.
"We haven't come here to go for a walk in the park. We've come here to give everything and go for glory."
"From the first game we knew it wasn't going to be easy, our attitude has been to go step by step.
And their coach, Jose Pekerman, admits the Brazilians have yet to hit top form.
The game will see a duel between Colombia forward James Rodriguez, who leads the scoring charts in the tournament with five goals, and Brazil's star man Neymar, who has scored four times.
Armero laughs off idea Brazil are vulnerable
level of determination in each team.
Armero admitted his team would be paying special attention to the Barcelona forward, and is confident Colombia can knock the hosts out of the World Cup, as long as they play for each other.
Nonetheless, former West Ham defender Armero does not believe Luis Felipe Scolari's side are struggling, emphasising the quality on display in the tournament and the Nike Shoes For Sale
"Every team wants to win and no one is hiding. Also, they were up against Chile, who have great players."
"Sometimes a team with a lot of potential, if they don't find the result and they need to win, they can't play so brilliantly," he said.
"To nullify Neymar the whole team needs to help each other out in trying to mark him," he said.
"So the competition becomes interesting because a team with less individual stars can disturb the balance of the other team."
Brazil struggled to beat Croatia in their opening game, before drawing with Nike Shoes Dual Fusion
And Armero emphasised that his team would not be content to go home at this stage.
They haven't been at their best, but the standard is high that many teams are very close, argues manager Luiz Felipe Scolari. "There were a lot of even matches. There is no difference between teams that have tradition and world titles and the rest of the teams. Matches are being decided on penalties, in the final minutes, on mistakes."
"We are working so we can go as far as possible," he said.
normal to have people demanding that we play better,"
Mexico but beat Cameroon to qualify for a last 16 clash with fellow South Americans Chile, which they won on penalties.
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