Shudder has acquired “Hallowarrior,” a post-apocalyptic thriller that marks the feature debut of writer and director Ben Sottak. The Halloween-set film stars Milly Shapiro (“Hereditary”), Ajani Russell (“Skate Kitchen”), AJ Bowen (“You’re Next”) and Shannyn Sossamon (“A Knight’s Tale”). The deal includes rights in North America, U.K., Ireland, Australia and New Zealand. “Hallowarrior” will have its world premiere at the Tribeca Festival on June 10 and will debut on Shudder this fall. “Hallowarrior” follows Pumpkin (Shapiro), the last girl on earth and sole survivor of a humanity-ending plague, scavenging the wasteland for supplies on the eve of Halloween. Pumpkin’s lonely holiday ritual is interrupted by the arrival of a savage gang of raiders at her doorstep led by Thalia (Sossamon). Outnumbered and armed with candy, wit and weapons, Pumpkin must ferociously fight back to survive the night. Popular on Variety Sottak is a NYC-based filmmaker.…