Adama Traore produced a late winner for Wolves at West Ham on Saturday.
Traore climbed off the bench to secure Wolves' first win of the season, sending West Ham spinning to a fourth straight Premier League defeat.
"The moment of recovering the ball with two minutes to go was huge," Nuno said. “After 90 minutes one of our midfielders went high to press and won the dual.
“We know about West Ham on the counter attack, with the speed of the players, but we were fortunate to get on the counter attack with the high pressing of Ruben and deserved it.
“It feels good. Even if we didn't win I would be happy because we worked hard. We are happy and for our fans it's massive, to come here and get three points."
Wolves had chances to make the win more comfortable, while Rui Patricio produced two fine saves to deny the hosts during a much-improved second-half at the London Stadium.
“If you look at the game, both teams could have won it, but I felt we were more in control of the game. When we have the ball we know to keep it and create chances in wide areas.
“The only thing you can think is to try and win it. It was a tough game but it's one more step in the way we want to go.
“Of course, sometimes you have to be more clinical. We had opportunities and we'll look at the next game."