Berglund combines his size and great reach with good technical skills and decent scoring ability. He is tough to steal the puck from when he reaches full speed and protects the puck well. Berglund likes to drive the net and when he does not get a good shot opportunity, he is a good passer as well. He should play more physically and work on his speed, although already being a capable skater. Earlier considered a bit one-dimensional and not very hardworking, Berglund has improved significantly in both areas. He is somewhat inconsistent in his play and a bit streaky.