Tfw you spend the first hour and half of what seems like a good horror movie wondering why it only has 1.5 stars on Netflix, and then the last fifteen minutes realizing why. [Spoilers for 'They're Watching.']
Good suspense instead of just jump scares, which I find is something found footage can usually struggle with. The usual stuff is there-cameras messing up and the like, but not too much.
Then at the end there's a moment where the true antagonist was revealed (and even the buildup to her was good! There were hints, but nothing entirely overt) and like 2/3 of the main cast are killed within fiv-