Hey what's up, i don't remember the name of the movie but i watched it between 1990 and 2000, it's all about demons and monsters that can have human apparience and a small group of people that are fighting against them, they get trapped in a house rounded by demons and all that shit but their only powerfull weapon is a small glass with blood from a special soldier or hero or something like that so when they put a drip in the floor it creates like a magical barrier that demons can't traspass it.
I also remember a scene when a girl takes the glass of blood and put it all over her body so demons couldn't touch her.
I remember at the end of the movie the only survivor of the massacre takes a bus in the middle of a highway in a desert and when he/she went inside the bus he/she put a drip of that special blood right on the floor of the bus's door so the demons can't go inside.
Do you know what movie am i talking about?