A24 just dropped Official Trailer 2 for Onslaught, the Adam Wingard action-horror film that puts Adria Arjona between her kid and a pack of genetically engineered super soldiers. If you liked The Guest energy and want a theater date on the calendar, this is the cut that locks the threat, the cast, and the IMAX push.
Watch Official Trailer 2
The new clip is the harder sell after June’s first trailer. It opens on Celeste (Arjona) at a desert stop with her daughter, then cuts to lab oversight and the runaway squad that turns the night into a hunt. The soldiers read as durable, military-made killers rather than anonymous gore props, and the tone stays closer to siege survival than polished superhero pulp.
What the clip does not tell you
A24’s film page dates the theatrical release for September 4, 2026. The new IMAX creative repeats the same date and pushes “Experience it in IMAX,” so the studio is treating this as a big-screen event, not a quiet digital dump.
Wingard directs from a screenplay by Simon Barrett, with story credit shared by Wingard and Barrett. That is the same creative pairing behind You’re Next and The Guest. Dan Stevens is back in the Wingard orbit after The Guest, joined by Eric Wareheim, Reginald VelJohnson, Michael Biehn, UFC champion Alex Pereira, Drew Starkey, and Rebecca Hall. Arjona leads as Celeste, framed as an Army sniper who has to protect her young daughter when the experiment breaks containment in the desert.
A24’s official synopsis is blunt about the premise:
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.
That line is from A24’s Onslaught film page. The studio’s YouTube description for Trailer 2 also lists the September 4 release and the full headline cast under Wingard’s name.
Cast and credits checklist
Director: Adam Wingard
Screenplay: Simon Barrett
Story: Adam Wingard and Simon Barrett
Lead: Adria Arjona as Celeste
Also starring: Dan Stevens, Alex Pereira, Drew Starkey, Rebecca Hall, Michael Biehn, Eric Wareheim, Reginald VelJohnson
Distributor: A24
Release: theaters (including IMAX) on September 4, 2026
What is not confirmed yet
Runtime and exact ticket-on-sale windows are still rolling out market by market. Treat social rumors about character codenames or shared-universe lore as unverified until A24 or Wingard put them on an official page. The concrete, bookable fact right now is the September 4 theatrical date plus Trailer 2’s clearer look at the threat Celeste has to outgun.
Where to watch next
Keep the official Trailer 2 bookmarked on A24’s YouTube channel, then watch the September 4 theater listings for IMAX and standard screens near you. Follow the Onslaught hub and the movies feed for follow-up stills, dates, and ticket windows as they lock.