Common lyrical themes found in the band's music include Viking culture, recollection of a pre-Christian world, and Norse folklore.

In 1992, Unleashed released their second studio album, Shadows in the Deep, including a cover version of Venom's "Countess Bathory".

Lindgren began to focus strongly on playing punk rock in his band Loud Pipes, consisting of members from famous Swedish death metal bands, so Unleashed replaced him with Fredrik Folkare, who played guitar on the fifth Unleashed studio album Warrior in 1997.

[3] Hedlund quickly branded these accusations as false and stated, Unleashed praises nature, beast and man.

On 24 July 2009, Unleashed signed a contract with German label Nuclear Blast Records for the release of their tenth album entitled As Yggdrasil Trembles.

In early 2018, it was announced that Unleashed had signed to prominent Austrian label Napalm Records, through whom they released their next album entitled The Hunt for White Christ later that year.