Fun and gory. It's one of those flick where you watch it and say "Hey! It's..." when a familiar face appears. Everyone does a great job in their roles, but the story isn't exactly novel. And two hours is a bit too long.
Ultimately, a harmless movie night watch populated with familiar faces.

Surprisingly not too bad. A tad predictable but competently shot (!) and nicely acted. It plays like a best-of Hitchcock tropes without any real style.

Meh. 
Attack of the 30-year-old Ravers.

My Dinner with Andre
Int. Restaurant 
Wallace and Andre sit at their table. An uncomfortable silence has interrupted their near constant conversation. 
Suddenly, after sipping his wine, Andre breaks the silence. 

Andre: Have you seen Pillow Party Massacre?

Wallace: As a matter of fact, I have. 

Andre: Pretty boring, wasn’t it?

Wallace: You said it. All that talking. 

Andre: Ugh. I don’t know how anyone could sit through that. 

FADE OUT.