Urðun play a form of primitive death metal that is sufficiently competent to be pleasing to the fan of the style yet be utterly forgettable by virtue of its being both indistinguishable from its peers. But credit should be given where it is due. The band knows how to make clear beginnings, how to turn riffs on their head, create breaks, twists and introduce new ideas without destroying the continuity of the music. The coherence of the song is reinforced by bringing back main riffs in later parts of the songs even if for shorter spans of time than earlier in the songs.
Horror and Gore is the old school tremolo heavy-groove riff procession you might expect from a band like Urðun, but the songs are far from being riff salads. While some contrasting riffs are introduced as new ideas, most riffs obviously proceed from each other evolving in proper motif forms by maintaining one or more dimensions and altering others. Differing enough to be considered separate riffs (you would not consider them as derived from each other right away) but being similar enough that the idea is not broken.
As a demo, Horror and Gore is a modest triumph, but Urðun must, for a future full-length release, be able to refine their style, bringing out a distinctive identity in order to stand out. The way to find this identity is to start thinking about the riffs and this style is the end goal itself and rather to think of them as the tools for them to express what they want. Once they become a means to an end, the conceptual picture of something beyond the music can become the band’s focus, and when the listener experiences the music, he will be able to fall through the music, piercing layer after layer in subsequent repetitions of an album that is more than the sum of its parts and more than its musical structures.