Jeremy Heilman’s review published on Letterboxd :
Essentially a retread of The Belko Project, this slick office brawler concerns a viral outbreak that leads to coworker slaughter. The specifics of the virus are set out in the lengthy expository sequence, yet despite information that the virus causes all sorts of arrests in impulse control, most of the true fun is confined to the background actions of the extras. What remains hits the same beats of any other "wild" revenge film, and is mostly concerned with a somewhat ridiculous and overextended slaughter carried out in search of an elevator key. What seems to be color blind casting in the lead role initially feels refreshing, then curdles somewhat when the repression of masculinity is revealed to be film's key theme.