Pompey fought tooth and nail for their 1-0 win over Plymouth Argyle in the FA Women’s Premier League southern division.
The Blues had to battle blustery winds and hammering rain, as well as a physical opposition, in a demanding game at Cams Alders.
Sarah Kempson struck the decisive goal – four minutes into the second half.
Northeast said: ‘It was a bizarre game and it wasn’t a spectacle to watch by any means.
‘We’re really happy to come away with the three points and a clean sheet, though, as it was a really tough day for us.
‘I won’t be detrimental to Plymouth as to whether their tactics were to rough us up.
I’m really proud of the team for the way they kept their concentration levels highPerry Northeast
‘But the game was really broken down and slow paced.
‘There were a few indifferent tackles going in on us from the opposition.
‘It was a real tough day for that reason.
‘But I’m really proud of the team for the way they kept their concentration levels high.
‘For the majority of the occasions, they didn’t respond to potentially-hurtful challenges.’
The pace and the stop-start nature of the game meant it didn’t flow as the Blues boss would have liked.
The strong tackles and number of free-kicks conceded by the visitors meant Pompey’s progress was hampered.
But Northeast is not surprised by the tactics.
Instead, he is expecting other sides to adopt the same approach when taking on Pompey between now and the end of the season.
Northeast knows the Blues will need to keep their heads in similar situations in the future.
Although, he understands just how hard that can be at times.
And the boss reckons team spirit and togetherness will be key to countering such tactics as Pompey close in on the league title.
‘They had to win ugly on Sunday,’ added the Blues manager.
‘It was a really tough day at the office for the girls but they followed the rules and kept a clean sheet.
‘They are a nice bunch of players but they are definitely not going to buckle in the face of a challenge.
‘The girls will all react but we don’t want to create a rivalry with anyone.
‘I know I’ve got a side who don’t mind playing the tougher side of the game.’
The victory left Pompey second in the south division table.
They are behind leaders Cardiff City on goal difference but have a game in hand on their Welsh rivals.
Brighton & Hove Albion are a further point back in third spot, having also played a game more than the Blues.
Pompey travel to Thamesmead to take on Charlton Athletic on Sunday (2pm).