Hammarby managed to create some excitement in the second leg despite conceding two quick goals almost immediately. But when Felicia Schröder got a new chance in the second half, the 19-year-old scored again.
It was enough for Häcken to hold on and win the very first edition of the European Cup.
"What a magical feeling," says Häcken coach Elena Sadiku in Aftonbladet's broadcast.
"I am so proud of the club, of us."
It was already clear in advance that Hammarby had an uphill battle in the return leg, after Häcken's 1-0 victory in Stockholm on Saturday and the fact that Hammarby's women had never beaten Häcken at Hisingen.
But the task suddenly became even steeper when Felicia Schröder - the only scorer last time - was left unmarked twice in less than three minutes.
Lost speed
After just under six minutes, the Häcken star got the ball on the edge of the penalty area, turned and scored 1–0 at the near post.
Two and a half minutes later it was time again, when Anna Anvegård connected a pass and Schröder easily rolled in to make it 2–0.
At that point, Hammarby needed to score three goals just to take the match to extra time.
But just like in the first final match, Häcken suddenly lost control of their game.
This led to Hammarby reducing the deficit after just under half an hour, through a header by Svea Rehnberg.
"We started very strongly, we were on the ball the whole time. But then I think we went down again, like we did in the last game," said Felicia Schröder in Aftonbladet's broadcast during the break.
Chance for revenge
Immediately after the break, Elin Sørum also headed in a corner kick to make it 2–2.
But in the end, Häcken - and Felicia Schröder's goal-scoring - came back to life.
"I think we're ice-cold and running our game," says the three-goal scorer.
About the 3-2 goal, Schröder says:
"It's incredibly important for the team and for our confidence."
And this time Hammarby couldn't come back. When the final whistle blew, Häcken was able to celebrate the historic title together with the yellow-black fans.
"What great support we have here today, it's almost full and it's an incredible feeling," says Schröder.
In just over two weeks, however, Hammarby have a chance for revenge against Häcken, when the teams meet again in the final of the Swedish Cup.
Corrected: In a previous version, Rehnberg had the wrong first name.
On Friday, Häcken became the latest Swedish football team to win a major European tournament.
Here are all Swedish titles so far.
Women:
2003: Umeå, Champions League.
2004: Umeå, Champions League.
2026: Häcken, European Cup.
Men:
1982: IFK Gothenburg, Uefa Cup (now Europa League).
1987: IFK Gothenburg, UEFA Cup.
Swedish final losses, women:
2002: Umeå, Champions League.
2005: Djurgården, Champions League.
2007: Umeå, Champions League.
2008: Umeå, Champions League.
2014: Tyresö, Champions League.
2026: Hammarby, European Cup.
Final losses, men:
1979: Malmö FF, European Cup (now Champions League).
