By: Addison Wylie The vaguely titled Assassin has the ability to be cool, but instead settles on being “cool”. There are cool shots of hitman Jamie (played by Danny Dyer) on his motorcycle as he zips to a hired job and zooms off to collect his earnings, and I quite like what filmmaker J.K. Amalou can do with the correct lighting.  Then, there are those “cool” moments where popular songs ineffectively crash into a scene while…