Onslaught Release Date & Cast: 7 Things to Know
Onslaught opened in theaters on September 4, 2026. The A24 action-horror film is directed by Adam Wingard and stars Adria Arjona as an Army sniper forced to protect her young daughter when genetically engineered super-soldiers break loose in the desert.
A24 positions the movie as a violent survival thriller with a large ensemble cast. You can also visit the Onslaught movie page on Butter Flix Clips.
Table of Contents
- When did Onslaught release?
- What is Onslaught about?
- Who stars in Onslaught?
- Who directed it?
- What kind of horror movie is it?
- Is Onslaught streaming?
- Who is the movie best for?
1. When Did Onslaught Release?
Onslaught released in U.S. theaters on September 4, 2026. A24 lists the date on the film’s official page and opened ticket sales around the theatrical launch.
2. What Is Onslaught About?
The premise begins when a rogue group of genetically engineered super-soldiers escapes in the desert. Adria Arjona’s character, Celeste, is an Army sniper who must defend her daughter as the threat reaches their community.
The story combines military experimentation, survival horror, and direct action rather than relying on a supernatural monster.
3. Who Is in the Onslaught Cast?
Adria Arjona leads the cast. A24 also lists Dan Stevens, Eric Wareheim, Reginald VelJohnson, Michael Biehn, Alex Pereira, Drew Starkey, and Rebecca Hall.
The mix gives the film recognizable horror, action, and character actors around Arjona’s central survival role.
4. Who Directed Onslaught?
Adam Wingard directs Onslaught. Wingard co-wrote the screenplay with Simon Barrett, reuniting the filmmaking partnership behind earlier genre projects.
The movie also brings Dan Stevens back into Wingard’s orbit, which has drawn attention from fans of The Guest.
5. What Kind of Horror Movie Is Onslaught?
Onslaught sits between action, horror, and military conspiracy thriller. Its villains are engineered human weapons, so the danger comes from physical pursuit, combat, and the consequences of a secret experiment escaping control.
The trailers emphasize practical violence, desert locations, weapons, and a hard-edged 1980s action-horror influence.
6. Is Onslaught Streaming Yet?
No. Onslaught launched as a theatrical release on September 4. At release, the film is not a Netflix or HBO Max streaming premiere.
A later digital and subscription-streaming window is expected, but A24 has not made the theatrical launch a day-and-date streaming release.
7. Who Is Onslaught Best For?
The film is best suited to viewers who want aggressive action-horror rather than slow-burn suspense. The central appeal is Arjona fighting an abnormal military threat while Wingard leans into genre spectacle.
Onslaught was already one of our major September picks. See the Top 10 September 2026 movies for the wider release calendar.
Final Take
Onslaught is in theaters now. Adria Arjona leads an A24 survival-horror story about an Army sniper, her daughter, and escaped genetically engineered super-soldiers, with Adam Wingard directing an ensemble that includes Dan Stevens and Rebecca Hall.
Sources
A24: Onslaught
Decider: Onslaught release and streaming status