Onslaught film scheduled for September 2026 release

Onslaught is an upcoming American action-horror thriller directed by Adam Wingard and written by Simon Barrett. Scheduled for release by A24 on September 4, 2026, the film stars Adria Arjona as Celeste, a divorced Army veteran and sniper living in a desert trailer park.

The plot follows Celeste as she attempts to protect her young daughter from a rogue squad of genetically engineered super soldiers that have escaped from a secret military facility. The ensemble cast includes Dan Stevens, Eric Wareheim, Reginald VelJohnson, Michael Biehn, Alex Pereira, Drew Starkey, and Rebecca Hall.

Early reviews describe the film as a stylish throwback to 1980s genre cinema, blending elements of action, horror, and thriller. While noted for its visceral imagery and cast, some critiques suggest the film may struggle with underused talent and plot elements that fail to reach their full potential.