The set consists of songs that rely on simplicity and the straightforward power chord-pairing nature of the subgenres that are channelled here, but in most cases, the effect loses its charm early on, resulting in songs that sound uninspired. For the most part, choruses fall short due to awkward hooks and out of place key changes, in addition to gang-vocal abuse. The numerous attempts to bolster sections using gang vocals end up backfiring, making the effect seem predictable and oversaturated.
The album does, however, gain more momentum in its latter half, effectively employing aggression on hardcore-tinged tracks like "Let's Get Back," "YLPD" and "Forgotten Society." The half-growled vocals and punchy, high-intensity riffing on these songs is a welcome change of pace and separates them from the bland plodding of the other, less memorable songs. Though Zero Hour is a hint formulaic, the band demonstrate that they have promise with the occasional well-written song. (Stomp)