2009-10: Niklas Lundstrom made 17 regular season appearances for AIK J20, putting up a 2.94 GAA and a .906 Save % for the club. He elevated his game for his 3 post-season contests, lowering his GAA to 2.22 and posting a sterling .926 Save %. He also showed well in his one Allskaven appearance with the AIK parent club, registering a 1.79 GAA and a .941 Save %.
2010-11: He again spent the bulk of the season with AIK J20 with a 3.05 GAA and .891 Save %. Made one forgettable appearance for AIK in the Elitserien (6.34 GAA and .783 Save %) but played better in 2 games on loan to Lindlovens in the First Division where he managed a 2.35 GAA and a .925 Save %.
2011-12: Lundstrom was impressive in limited pro action and was one of the top goalies in Sweden's SuperElit U20 league. He played in two games with AIK in the Swedish Elitserien and played in three games for second division (Allsvenskan) Oskarshamn. He allowed three goals in his two starts with AIK and had a .958 save percentage. He had a 2.27 goals against with a .905 save percentage playing for Oskarshamn. In 31 games for AIK's U20 team he had 1 shutout and posted a 2.52 goals against and .923 save percentage. In the three game playoff series with Farjestads he was 1-2, stopping 42 of 43 shots in Game 1 for a 3-1 win. AIK lost the second game in a shootout and Lundstrom finished the playoffs with a 2.57 goals against and .915 save percentage.
2012-13: Lundstrom played 14 games in Sweden's SHL with AIK and won a silver medal with Sweden's U20 team at the 2013 World Junior Championship. He was 3-9 with a 3.10 goals against and .901 save percentage as a backup to veteran Daniel Larsson on the ninth-place club. Lundstrom appeared in four games at the WJC and was 2-1 with a 1.60 goals against and .944 save percentage. He stopped 31 of 33 shots in Sweden's 3-1 loss to the USA in the gold medal game. Lundstrom played 11 games for AIK's U20 team and had a 1.49 goals against and .946 save percentage. In three SuperElit playoff games he was 1-2 with a 2.37 goals against and .903 save percentage. Lundstrom signed a three-year entry-level contract with St. Louis in May, 2013.
Lundstrom has a solid butterfly technique, good lateral movement for a big man and a quick glove hand. The big netminder plays a little too deep and can have mental lapses after letting in weak goals. His development will continue with an organization known in Europe for producing talents goaltenders. It could be some time before the Swedish-born goalie decides to play in North America.
Lundstrom has yet to show outstanding skill in Europe. However, 2013-14 could be his opportunity to seize the starting goalie position for AIK. He will likely stay in Europe for the near future.