When a job goes wrong there are consequences.
David Fincher does "stoic hitman doing stoic hitman shit". There's almost no dialogue from Fassbinder just constant narration. I think Tilda Swinton has the most on-screen lines and she's only in it for ten minutes.
It's a stream of rental vehicles, passports, credit cards, hotel check-ins and burner phones set to a Trent Reznor soundtrack with some diegetic use of The Smiths.
For all its style and purpose it's astonishingly linear and flat. The Killer goes about doing his thing in such a undramatic way that while it might be perfect for the character I'm not sure it's perfect for the audience.
If The Killer wants to be so bland he's forgotten then such a perfect portrait of that becomes naturally forgotten. 6/10 defeated by its own clarity of purpose.