This takes everything that made the first film the classic that it is and pukes all over it. The worst sequel ever made.
http://gradez.tumblr.com/

Would you like some Pea Soup? It's Regan's speciality.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Tell her yourself you bastard.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

It will lie the truth.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Captain Howdy says you're not very pretty. What a vile demonic creature he is.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

It burns! It burns!
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

That is too vulgar display of power.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Are we doing Highlander now Ms Nan?
"I have something to say. It's better to burn out, than just fade away".
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

In time. In time.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Because your mother sucks c@cks in hell.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Or I could fly out the window and roll down the steps and that would make my head spin by the time I got to the bottom. Do you dare walk these steps again Nan?
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Not a roll Nan, but my head might spin.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Do you know what she did, your k<>t!ng daughter?
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Lick me! Lick me!
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Her mother licked it better for her.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

You mean having both a demon and Christ inside of her.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

How about when the spike went through Burton's foot?

How about when the crucifix went through Regan's huhu in the original?
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

Yeah, it wasn't scary in the least. It was quite giggle provoking, in fact.

They forgot to make it scary of give it shock value, which is a large part of the reason why the first one was so popular. Boorman is more interested in the mystical elements of things and he attempted to do something different, but just ended up being misguided. His visuals in the film are fine, but yes, he made it weird. Friedkin was known for his more gritty and realistic presentation of his films.
Exorcist: Christ's power compels you. Cast out, unclean spirit.
Destinata:

I liked the scenes at the clinic and Regan's apartment. But this movie was weird.

This movie is so bad, it's not even so bad it's good. It's just absolutely awful. I don't think even Boorman knew what he was trying to do with it.
"Worthington, we're being attacked by giant bats!"

I've got a soft spot for it, too.
I saw the Exorcist as a little kid, and it terrified me long after the movie ended. But that all went away when, a couple of years later, I saw the comedy that is Exorcist II. Psh, I ain't afraid of no locust!