Known for its abrupt, shocking, and somewhat ambiguous ending, Enemy is a layered and nuanced examination of deep and interesting themes. Directed by Denis Villeneuve, Enemy is a taut psychological drama starring Jake Gyllenhaal in a dual role. Starring as both Anthony Claire and Adam Bell, two men who appear identical but behave very differently, Gyllenhaal delivers two excellent performances as two characters discover one another and their uncanny resemblance. Each character is different from the other in personality, so it's really a matter of closely watching Gyllenhaal's performance in order to puzzle out exactly what's happening, making Enemy a particularly rewarding watch when examined more closely.

https://screenrant.com/enemy-ending-explained-meaning/