Absolutely agree. Easily one of the better films I have seen in a long time. It truly is brilliant. And I do not use that term brilliant to often for movies.
I went into it thinking it was overhyped, etc., but it did prove me wrong.
I will say this though. I am a big fan of film, have been my entire life, and I actually applied to NYU film school and got accepted based on my fine art portfolio, as I was going to go for cinematography. However I wound up going to Parsons School of Design in NYC instead for Illustration. A lot of that decision had to do with the insane additional "lab and equipment" fees one had to pay in addition to tuition. I mention all of this as one of my main ideas when I was in high school/college for a film was to do a silent horror movie. Make it really, really brutally violent, but no sound other than soundtrack. I thought it would be a really visceral experience and if done properly incredibly effective at being twisted, and this movie has made me want to rekindle that idea which is now almost 20 years old.