Speaking to Digital Spy, the Cult actress said that the Fede Alvarez-directed horror is "going to be crazy".
Additional reporting by Tom Mansell
"It's very, very dark," she explained. "I know the first one was a little bit more tongue-in-cheek, there was some humour in there. Unintentional, but still kind of funny. Ours is very dark and violent."
"It's not so much a remake or a reboot as it is a continuation of the saga. We're not trying to recreate it."
The Evil Dead, also starring Jane Levy, Shiloh Fernandez and Lou Taylor Pucci, opens in cinemas next year and is produced by Raimi and original star Bruce Campbell.