The strongest points of the film come through its dialogue-driven characters and the phenomenal performances put out by the actors. The cinematography is great as are the special effects. You can tell this is a low-budget film that really utilized all of its resources to come together. The screenplay is absurdly funny and gets your brain spinning. There is the topic of disease and war, played out with mutating zombie-like figures that melt and merge with the living. This part of the movie is minimal but really helps capture the creativity of this world.
The movie is set up like 10 Cloverfield Lane and reminds me of The Thing, Night of the Living Dead, and Possum. Several easter eggs toward other movies are in there as well. There's a psychological element and satire among the overall tone of classic science fiction. The film does a good job capturing the solitude and isolation that we used to think only existed in movies. This is a timely film to watch since its release and it hits a home run with originality.
It's critically acclaimed but Friend of the World is not for everyone. This is a film for those who enjoy the weird, bizarre, strange, and surreal methods of arthouse cinema. I'd recommend it for fans of The Twilight Zone, Black Mirror, David Lynch, John Carpenter, David Cronenberg, Stanley Kubrick, and George A. Romero.