Beating Marcelo Bielsa's men 1-0 courtesy of a bizarre Illan Meslier own-goal, Nuno's pack are four unbeaten and also made it back-to-back victories.
Adama Traore's scorcher hit the crossbar and keeper Meslier before finding the net, moving Wolves above Leeds and up to 11th in the table.
And Nuno said: "Very pleased, especially with the attitude.
"It's very difficult to play and compete against Leeds. Sometimes, you have to go in the same way – chasing duels and pressing.
"The boys did really well in that aspect of the game. They were very aggressive and trying to recover the ball high, so I'm pleased with the overall performance.
"It's something we've been chasing, realising we're not in our best, highest standards – what we want and expect from the players.
"But we're trying to improve them day by day, and they gave us a good answer.
"Of course, the game was not perfect. From set-pieces, we allowed too many first contacts, but Leeds are very difficult.
"Both goalkeepers were active and we watched a very good game of football."
Building on an attack-minded second half which drastically turned things around at Southampton, Wolves fought fire with fire against Leeds.
They had the rub of the green to win it, but Traore's strike was just one of a series of shots they had throughout the night.
"There's luck, but the strike of Adama is fantastic. Where the ball went, in the upper corner, it was almost unstoppable," said Nuno.
"So, I think we have to deserve that luck. The action from Adama was fantastic. The momentum of his movement is amazing."
A point of concern for Nuno was seeing Fernando Marcal – who came on for Jonny Castro Otto on the hour mark – limp off with an injury and have to be replaced by Rayan Ait-Nouri.
The Brazilian has been plagued by injuries since arriving at Molineux from French club Lyon last summer and will now be assessed to determine the extent of his latest problem.
On the whole, though, there were a lot more positives than negatives to take from the game. Rui Patricio made a number of important saves for a well-deserved clean sheet.
"When you watch a game and see too many good actions of the goalkeeper, it tells you the game was open and there were chances for both teams," added Nuno.
"Leeds created enormous problems and clear chances. Our keeper did well, but Meslier also did fantastic saves.
"I'm pleased, but there are details we want to correct as well."