Unleashed started to expand some elements already present on their previous albums, and other than the less-than-incredible production, came up with a five-star effort. The songs here offer a range of death metal styles, from fast-paced brutality, to mid-paced death n' roll, to slow, plodding crushers. Some Viking themes appear in the artwork and lyrics, as on their past efforts, helping to establish a sub-genre that thrives today with bands like Amon Amarth and Hammerfall. Whether you like Unleashed or not, no one can deny that they set themselves apart from all of the other Swedish death metal bands. On this album and their others, they sound nothing like Entombed, Grave, Dismember, At the Gates, or any other well-known metal band from Scandinavia. They never went for the buzzsaw guitar sound favored by Entombed, Dismember, and, at times, Grave. And while they do have some melodic sections, it's a different style of melody than that of Dismember or At the Gates. Vocalist/bassist Johnny Hedlund's wildman screams, growls, shrieks, and grunts round out the unique package this band presents.
Across the Open Sea boasts some excellent examples of the Unleashed brand of rocking brutality, beginning with the mid-paced To Asgaard We Fly, the slow Open Wide, and the speedy I Am God. This mix of tempos continues throughout the album and makes each song distinct. You never get the feeling that the songs all sound the same. This release has heavy, catchy riffs, high-speed solos, and a brash attitude unlike any other in Swedish death metal. I think it's one of their top three or four albums.