David Fincher directs Michael Fassbender in "The Killer."

Fassbender portrays a meticulous and disciplined assassin.

The assassin's use of aliases adds humor and intrigue.

Film delves into the assassin's thoughts, revealing complexity.

 Fassbender's stoic portrayal hinders emotional connection.

Well-executed, violent hand-to-hand scenes showcase ferocity.

The movie intricately weaves a sense of mystery into its narrative.

 Tilda Swinton and Charles Parnell deliver standout performances.

The film balances violence, maintaining realism without excessive gore

Remote main character hinders overall excitement and engagement.