Nuno was proud of his players after Wolves secured their first ever Europa League group stage win over Besiktas on Thursday.
Most teams in the world struggle to deal with the ferocious atmosphere in Istanbul, but the Premier League outfit showed grit and determination to grab all three points.
With the game destined for a draw, defender Willy Boly popped up in stoppage time to score the winner.
Speaking after the game, Nuno said: "The performance wasn't the best, we competed well but we were sloppy, we weren't accurate when we should be and we've got to improve that. It's a tough stadium and environment but we managed the game well and we kept pushing.
"I was trying to find solutions with our substitutions, Adama [Traore] did well but we struggled with the final touch, that's something we've got to improve.
"We'll keep on fighting, it's a competitive group but we'll just keep looking forward. We were in the Championship two years ago, we must be proud, the fans were superb tonight. We have to improve and keep believing in the things that we do."