Everest 2015
Everything feels believable. I honestly could not tell how much was shot on real locations versus sets. The world feels fully realized, and the makeup is also great. It adds to the realism and makes the characters feel grounded in that environment.
The third act is definitely the best part. That is where everything finally comes together and delivers the tragedy and payoff. The first to second act felt a bit dragging for me. It takes time to build, but not all of it kept me fully engaged.