Man, this film falls apart halfway through
I know horror films are not exactly the most neatly plotted and structured worlds, and I'm willing to allow such things as instant walls covering doors as part of the evil paranormal elements, but really. It's like the screenwriter wrote about half the film, came to when everyone had barricaded themselves up on the balcony...and then just utterly and completely blanked and had absolutely no idea what to do next or how to resolve anything.
"Okay so they break through the wall and find some random rooms, but they lead nowhere and are CURSED, then some random punks somehow get inside so that one of them can get outside, then the demons just kill most everyone, then the two mains ride around slashing demons with a sword, then a helicopter falls through the roof and that guy from the start is there..."
Would it really have been that hard to make things flow together properly? It was pretty jarring.