Rian Johnson's

Looper

In 2074, when the mob wants to get rid of someone, the target is sent into the past, where a hired gun awaits - someone like Joe - who one day learns the mob wants to ‘close the loop’ by sending back Joe’s future self for assassination.

Winner of the following awards in 2012:

Full movie description: https://www.imdb.com/title/tt1276104