Alexander Isak looked like Alexander Isak.For the first time in a long time the Sweden striker, clutching the man-of-the-match trophy after his team’s 5-1 victory over Tunisia, could reflect on a job well done. He had performed like an elite striker.One goal and two assists across 90 minutes is the type of output Liverpool and their supporters had been expecting when the then Premier League champions spent a club record £125million ($168m) to secure his services last September. Approaching 12 months later, after a season when everything seemed to go wrong for Isak, the hope is that he can find form at the World Cup and carry that into pre-season and beyond.This was a good starting point.It is important to point out that no one is suggesting the 26-year-old is “back” after making a positive impression against a poor Tunisia side, but the outlook looks much more positive than if Isak had toiled.The striker was substituted on 90 minutes, but it was the first time he had reached that stage of a match since October when he played for Sweden against Kosovo.Isak had scored an impressive goal in a warm-up game against Norway and his strike against Tunisia, below, was similar in its execution.Once again it was a counter-attack, where Isak was released into the left channel, drove towards the opposition box and then arrowed a shot into the far corner.Goalkeeper Mouhib Chamakh should have done better, but Isak deserves credit for taking the strike on early before he was set.It is the type of situation where Isak thrives, but was one he barely found himself in when playing for Liverpool.Arne Slot’s side often came up against low blocks which restricted that space. They struggled to counter-attack opponents because of the lack of pace and dynamism in the side, and their build-up play was slow and methodical so, when the ball did get to the final third, they found that part of the pitch crowded.