Thanks to Ryan Tunnicliffe’s second-half strike, Town made it two wins from two in the Sky Bet Championship and pushed themselves up into 13th place, ahead of Saturday’s meeting with league leaders Norwich City.
“I just thought it was a brilliant performance," Cohen started. "We were dogged, the keeper was brilliant when he needed to be and then in front of that, everyone had a really good game.
“There wasn’t one person you could look at from the 90 minutes or the subs that came on that played below-par.
“I thought the boys did everything they could to get a result, at times in the first half we rode our luck a little bit without being under severe pressure but lots of crosses in our box and Glenn Murray had a few chances.
“Second half I thought it was a perfect away performance in terms of getting the goal, having a few chances and we kept the ball against a team that want to build pressure towards the end of the game and we never allowed it. I thought there were some magnificent performances all over the pitch.
One of those particular individual performances that impressed the first-team coach was Simon Sluga, who made a number of important saves to fought Nottingham Forest.
“I think Slugs has had a brilliant season. When he came last year he had time to adapt and since I have come in anyway, I can only judge it on that, he has been pretty perfect. Not made many mistakes and tonight is probably the best game I have seen him have.”