Hughes has already said he wants to change the brand of football he inherited from Tony Pulis at the Britannia Stadium and there was evidence of that transition in Saturday's 2-1 win over Crystal Palace, which earned City their first points of the season.
"We need a few extra faces and possibly a little bit more pace in the side than we have at the moment," he said. "So we will look for that type of player I would suggest.
"But a lot of clubs and managers are looking at the same types of players, so it is not easy to get them over the line at the moment."
Hughes has signed two defenders so far this summer in Erik Pieters and Marc Muniesa while sealing a deal to bring striker Juan Agudelo to the club in January.
He added: "We are trying to get a few more bodies in just to add to the quality we have got.
"This window has been quite frustrating in fairness. But we are still in the mix for a number of players.
"Hopefully we will get positive news next week, but if we have to wait until the last minute, we will do that. It has not been easy, but we just have to stick at it."