[1] Her achievements include one victory in the Women's EHF Champions League as club player, one Olympic bronze medal, one gold and one silver medal at the IHF World Women's Handball Championships, and four times European champion.

As youth player, Hegh Arntzen represented the clubs Stord HK, Herkules and Gulset IF.

[2] Hegh Arntzen made her debut on the national team in 2014.

She also won a bronze medal at the 2016 Summer Olympics, and became European champion in 2014, 2016, 2020 and 2022.

[2] She also represented Norway in the 2013 Women's Junior European Handball Championship, placing 4th,[4] and in the 2014 Women's Junior World Handball Championship, placing 9th.