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Onslaught
Onslaught poster

Slasher

Onslaught

2026 · R · 1h 32m

Curator Score7.3/ 10

A modern day slasher, militarized. Three genuinely creepy engineered super soldiers break containment and obliterate anything breathing in their path, ending up at a trailer park with an ex-sniper suffering from PTSD. Wingard shoots it slick and clinical. 80s synth soundtrack, and a lot of it is shot in cold blue and fog.

Release & where to watch

In theaters
September 4, 2026
Home release
Not announced

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Curator Certificate

7.3

Out of ten

Passed by two curators

Fear3.3
Gore5.5
Atmosphere6.8
Intensity7.0

How we score

Driven by atmosphere and intensity.

Jump scare times

Onslaught has 6 jump scares: 0 major, 6 minor. Compare counts

  1. 39:09minor
  2. 55:25minor
  3. 59:40minor
  4. 1:08:01minor
  5. 1:09:30minor
  6. 1:18:37minor

Major scares are the full jolts. Minor ones are smaller startles. Times run from the start of the film. Other cuts and streaming versions can differ by a few seconds.

Counted first-hand by Watch Darkly while watching, not compiled from another database.

Yes. Onslaught runs bonus material during its end credits, so stay through them.

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We scored it 7.3. Where do you land?

ours 7.3
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When a rogue squad of genetically engineered super soldiers break loose in the desert, a badass Army sniper must unleash hell to protect her young daughter.

Plot summary via TMDB

Genres

horroractionthriller

Tags

Content Warnings

Child endangermentEye trauma
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Directed by

Adam Wingard

Cinematography

Oren Soffer

Starring

Adria Arjona as Celeste · Alex Pereira as The Butcher · Dan Stevens as Hans Kammler · Eric Wareheim as Kovacks · Reginald VelJohnson as Josiah · Michael Biehn as Baylor · Drew Starkey as Cyrus · Rebecca Hall as Hanna Kammler

Production

828 Productions, A24, Breakaway Civilization, Lyrical Media, Ryder Picture Company

Deep Cuts

Context

Is Onslaught connected to You're Next and The Guest?

Read
Adam Wingard directed all three and co-wrote each with Simon Barrett. In an August 2026 interview with Bloody Disgusting, Wingard said: "When I look at this as a trilogy, especially because You're Next and The Guest were at a completely different phase of my career, those films have this youthfulness to it." The score carries over. Wingard and his collaborators released a vinyl for a version of The Guest 2 that was never produced, and he said the music was reused here: "We used some of that music in this movie. Actually, major themes we ended up recycling by the same composer." The composer is Matthew Pusti, who is credited on Onslaught. Dan Stevens appeared in The Guest and returns here in a different role. The three films share a director and a writer rather than a title or a continuing story, so we do not group them as a franchise. That is why You're Next and The Guest can appear among the related films on this page.

Lore

Is Hans Kammler in Onslaught based on a real person?

Read
Hans Kammler was a real SS officer. He held the rank of SS-Obergruppenführer and ran construction for the SS Main Economic and Administrative Office, which covered building work at Auschwitz including its cremation facilities. In April 1944 Hitler gave him control of jet-aircraft production, and from August 1944 he took command of V-2 rocket production at the underground Mittelwerk plant. An estimated 10,000 slave labourers died producing the V-2 at the associated Mittelbau-Dora camp. His death is disputed. He was declared dead as of 9 May 1945 on testimony from his driver, which was later judged unreliable. Competing accounts have him captured by American troops, escaping toward Austria or Italy, or killed in Prague. A 2019 Woodrow Wilson Center study confirmed that American forces captured and interrogated him, and found no evidence for the account that he was held for years and later died by suicide. Wingard told Bloody Disgusting that he and Simon Barrett wrote Dan Stevens' character as "this sort of evil third-generation Paperclip Nazi character." He also described his interest in Operation Paperclip, the programme that brought Nazi scientists to the United States after the war: "pretty much every conspiracy that's existed since can be tied back to Operation Paperclip."

Trivia

How did they do the chainsaw effects in Onslaught?

Read
Practically, using real chainsaws with the blades taken off. Wingard told Bloody Disgusting he avoids CGI for gore and blood: "I try to avoid that like the plague." One shot was first planned as a composite. Wingard said the setup was taking too long, so he stopped for the day rather than commit to visual effects he did not expect to hold up, and came back the next morning with a simpler approach. The effects supervisor, Brandon K. McLaughlin, had worked on Texas Chainsaw remakes and knew the method: with the blade removed, an actor can make contact with a running chainsaw safely and it still reads as the real object on camera. Wingard's account of the result: "If the blood is spraying, it's gonna be exciting."

Context

Why does Onslaught feel like a John Carpenter movie?

Read
It uses a siege structure. The A.V. Club described it as an Assault on Precinct 13 and Rio Bravo knockoff, and SlashFilm called it "primarily structured as an action movie in the vein of Carpenter's siege films." The setup is a fixed location, a group who have to hold it through the night, and attackers who keep arriving. Here the location is a desert trailer park and one of the residents is a former Army sniper. The presentation matches as well, with a synthesiser score by Matthew Pusti and heavy use of cold blue light. The kills come out of slasher tradition rather than from Carpenter.