I watched it as a little kid. I was too young to understand much of it. Aside from the vomiting, assorted head & body convulsions and her stabbing her crotch with I don't remember much else. I think the priest jumped out of the window at the end right?

When I got in my teens I thought I might watch it again but never got around to it.

Now occult and satanic movies do not get my interest so I may not see it.

I do remember when it came out there was a big stink going about kids playing roles in movies that they couldn't watch at the theater because they were too young to buy a ticket to the movie.