The film holds a 72/100 on Metacritic, and Rotten Tomatoes reports 73% approval among 52 critics. Deborah Young of The Hollywood Reporter described it as "an intense and, for the first hour, sickeningly violent film that unexpectedly segues into a moving psychological study." Young gave high praises to the film's acting performances, however states "it's not an exaggeration to say there's not a single pleasant moment in the film's first half" and "Viewers will keep their eyes closed" for the majority of the film. Young further praised the visual style of the film with "Kim gives scenes a dark, hand-held look in which the frame edge disappears into black shadows. It's not a particularly attractive style but does reflect the ugliness of its subject."
