We're Not Safe Here

This was all very effective storytelling. It doesn't need ostentatious musical stings or jump scares, it only builds on itself and very minor environmental cues. It is very slow burn and the payoff is very late in the third act, but the narrative is compelling and the characters are alive so that the tension becomes real. It is well written and well directed with decent casting and I would recommend it if you're in for some slow creeping horror.