[6] Harm's Way promoted the album with music videos for "Become a Machine"[7] and "Last Man",[8] and online streams of "Human Carrying Capacity" and "Call My Name".

[2][3][4][10] In Andy O'Connor's review for Pitchfork, he wrote about what he perceived to be the album's influences, stating: "While still a hardcore record, Posthuman does tip the balance towards Rust's industrial flirtations.

'Temptation' takes Godflesh's rumbling, mechanical bass and sets it to a slinking Jesus Lizard groove, then charts a course that resembles if Deftones went further in on their dream pop influences.

described the album as a standout in the recent trend of bands blending nu metal and hardcore, elaborating: "In the last few years, a substantial number of hardcore acts have been adopting nu metal influences with mixed results, but Harm's Way have managed to tastefully incorporate a groove element into their music.

Songs such as 'Unreality' and 'Dissect Me' intertwine classic nu metal elements with hardcore while avoiding sounding gimmicky or nostalgic.