Extremity

In "Extremity," a young woman named Allison, haunted by her traumatic past, voluntarily submits herself to a 12-hour extreme haunt called Perdition. She hopes that by facing her fears, she can purge her internal demons and start anew. As she endures the terrifying experience, she uncovers dark secrets buried deep within her psyche, forcing her to confront the true horrors of her past and the twisted evil that lurks within. Will she emerge stronger, or will Perdition's nightmarish trials consume her completely?

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Some movies that have similar genres and were produced around the same time as Extremity include The Sadness, X, Late Night with the Devil, Exists, Sweetheart, Elevator Game.