The website's consensus reads: "A uniquely stylish whodunit, Medusa Deluxe positions debuting director/co-writer Thomas Hardiman as a talented filmmaker with exciting potential.

[9] Jonathan Romney of Screen Daily called the film a "flamboyant sign-off to a picture that’s about as far you can get from the short-back-and-sides tradition of British realism", and wrote that the "electric performances, from a super-alert, bristling cast", give a "feel of live event to the action, framed in Academy ratio.

"[10] Jojo Ajisafe of Little White Lies called the film a "fun and extravagant murder mystery that shines a light on the beauty of hairdressing whilst leaving audiences guessing in this quick-witted whodunit.

"[11] The New York Times' Jeannette Catsoulis chose the film as one of its "Critic's Picks", hailing an "invigoratingly bold debut" [...] " displaying a flamboyant finesse and a cheeky, can’t-sit-still sensibility".

"[15] Guy Lodge of Variety praised the cinematography and the editing, but wrote that the "kinetic if not-quite-novel presentation doesn’t entirely patch over the weaknesses of Hardiman’s script, with its exhausting whirl of characters more colorful than they are shaded, and plotting that eventually runs out of compelling diversions from the matter at hand.