Film Name Suggestion

We considered changing the name of our opening to 'Dark Delusion' . We decided this because we believed that the title of 'Dark Nightmare' sounded very vague. We then decided to turn against re naming it because most horror movie titles are very vague as well. An example of this is 'The Exorcist'. This title is straight to the point and tells us about the meaning of the film just through the title. this is a main part of the opening sequence because if it does not match the contents of the opening it will not make sense for the audience.  It may have also not fit the genre of horror as dark delusion sounds a bit like an action adventure title.