Creating within the style of old school percussive death metal, Necrotic Disgorgement add in the catchier rhythms of deathgrind and know when to break songs for melodic detours that add hook to these relentlessly rhythmic songs.
Documentaries of Dementia builds in the style of later Suffocation, with frequent tempo changes, and frenetic drum buildups followed by proto-breakdowns, layered in choppy riffs made from intricate textures. They tend toward a higher-energy version with near-constant blasts in many songs, but know when to drop out of linear blast and vary things up a bit.
Unlike Suffocation, Necrotic Disgorgement has another decade of deathgrind to draw from and elicits some of the extremities from that influence. Among those are slightly more friendly lead guitar that sometimes even gets bluesy, absurdist riffs thrown in amongst the blast, and a tendency to be relentless where Suffocation would have brought the song to a peak and mellowed. The problem with any kind of uniformity is that it norms quickly and loses its intensity.
Necrotic Disgorgement keep this release raging with diligent riffcraft and the ability to cut the stream of riffs into songs, and then crest it with elements of other metal genres. This provides a complete package that, if you can stand the incessant blast and percussive riff medleys, provides a deathgrind experience of greater power than the norm for this genre.