The Norwegian attacking star, who on Saturday was praised as Europe's best player in 21 years (Golden Boy), scored four goals in 32 minutes in the second half when his Borussia Dortmund went from a 0-1 defeat to a 5-2 victory.
Other goals in the match were scored by Hertha's two - goal scorer Matheus Cunha and Dortmund's Raphaël Guerreiro.
Haaland were given a gift! The ref dubiously awarded them a penalty 85 minutes into the match, which was neatly put away by Youssoufa Moukoko.
The teenage striker, who turned 16 on Friday, thus became the youngest player in Bundesliga history.
Former Dortmund player Nuri Sahin has previously held the record since making his debut at the age of 16 and 335 days in September 2005.
MORE FOOTBALL: Halmstad is back in the Allsvenskan
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Halmstad back in the Allsvenskan Photo: Bildbyrån