Movie title needed.

Low budget horror flick. Small group of young adults trapped (surrounded by people influenced by the devil) in building. Devil is trying to come out of a mirror. There is some kind contraption in the basement the drips blood upwards.

Prince of Darkness (1987) (https://www.imdb.com/title/tt0093777/?ref_=fn_al_tt_1)

That's it. Thank you.