The Argentine defender has dismissed the notion that Napoli are in crisis, while stating that the team is unbeatable when they play at their best
The San Paolo outfit head into Sunday's game at AC Milan in a must-win situation if they have any European hopes for next season, as they sit seventh in the Serie A standings, 14 points off leaders Juventus.
Napoli's domestic league form this season has been in stark contrast to their success in the Champions League, in which they have reached the knockout stages, but Campagnaro says there are reasons for the fans to rejoice.
"The criticism has been too harsh," he told TuttoNapoli.net. "We are still in the Champions League and we eliminated one of the favourites to go through [Manchester City].
"We have a good chance to reach the Coppa Italia final. We are missing something in Serie A, but I am convinced that the fans like the fact that we are still fighting in Europe better."
The Argentine stopper then admitted that Napoli face a difficult task against Milan at the weekend, but noted his side are eyeing the three points.
"We know Milan's quality, but we want to do our best," Campagnaro continued. "We always play better when we give our best. There energy is always there.
"In order to win everything, we must always be at 100 per cent. If we are at our best, no one can beat us."