Listen again.

No seriously, listen halfway through those songs, e.g. the Vicious Circle riff on 1:15, or towards the 1:00 of Harbinger of Silence. It's deathmetal (duh), and it's catchy, not comparable at all to "brutal deathmetal" bands. Some of those riffs are not heavier than Amon Amarth etc.I wouldn't know what else to call it but melodic death.

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