Blue Ruin is a pretty standard revenge narrative, though. I didn't feel like there was much to that protagonist, everything important about him could basically be summed up in a sentence. Green Room is an exploitation-style "violence among a cultish subculture" type of film and the filmmaking ultimately just boils down to an exercise in building and releasing tension horror movie-style, without actually being true horror. For me the most effective sequence is when they finally start to slowly open the door, and the Imogen Poots character is looking through the vent at the bottom of the door, and Yelchin starts to hand over the gun and she finally sees the red laces and cries "They're killing us!" in this childish, desperate wail. And then all the machete-hacking starts.
Stewart plays his usual "natural leadership" role to sinister effect. What's disconcerting about the character is how he never panics or even loses his temper for one second, and at a certain point even comes across as almost bored and annoyed by the whole thing. And yet everyone under him is terrified of failing him. I appreciated the non-clichéd approach to this type of role.
Did you catch the stealth joke when they changed the band's name on the marquee from "The Ain't Rights" to "The Aren't Rights"? Get it? They're grammar Nazis!