I am aware that battles at this time heavily relied on the shield wall, and from what I can find there is little suggesting that use of two one-handed weapons is historically accurate. Is there any evidence to suggest that people from Scandinavia would fight in battle this way?
More can always be said, but here are some previous threads about this topic:
/u/nanashi_shino on A lot of movies, shows, games, and fantasy novels have fighters using two swords to fight in combat. Was dual wielding swords ever an actual skill that was used in real fights?
/u/Peli-kan on Is there a real-life precedent behind dual-wielding warriors?
/u/cazador5 on Was the Viking fighting style as hard to combat for Saxons as shows like 'Vikings' portray it to be?
/u/staples11 on How accurate is the combat from the show Vikings?