A movie about hitman

This hitman has a close friend. The hitman tells his friend to make a list of people that he doesn’t like, so that he can kill them. Firstly, the friend doesn’t take his seriously. But after killing the people he doesn’t like, he believes in him. (Btw, the hitman kills his friend’s boss firstly if i am not mistaken). That’s all i remember of this film

The Hit List (2011)