The Revenant is notable for its brutal and graphic displays of survival in the wilderness, but the extreme nature of its storytelling has prompted discussions of its real-life influence for years. The Revenant's brutal tale of revenge also highlights the tenacity and perseverance of the human spirit through its protagonist, Hugh Glass, as he's seen overcoming insurmountable odds throughout the film. The Revenant's lush cinematography by Emmanuel Lubezki and gripping score by composer Ryuichi Sakamoto and Alva Noto also further express the emotional core of Alejandro G. Iñárritu's gritty, slow-burn drama.

https://screenrant.com/the-revenant-true-story-inspiration-explained/