He has played professionally in his homeland, Italy, Wales, Scotland, Sweden and the United States, and made his debut for the Norway national team in 2012.

He scored his first goal in the title-deciding match against Tromsø, where Molde FK celebrated the first league championship in the history of the club.

[9] On 24 January 2014, he signed for Cardiff City, to once again play under the manager Ole Gunnar Solskjær, who was previously his boss at Molde.

[10] He made his debut on 15 February in the fifth round of the FA Cup, starting in a 1–2 home defeat to holders Wigan Athletic.

[11] A week later he made his Premier League debut in his only other game for the Bluebirds, playing the final 11 minutes in place of Fraizer Campbell at the end of a 0–4 home defeat to Hull City.

[21] Berget made his debut for Norway on 18 January 2012 at the 2012 King's Cup in Thailand, playing the first half of a 1–0 win over the hosts at the Rajamangala Stadium in Bangkok.