If you think Tarantino is good watch this. It's him but better.
This is a very Hitchcockian Poliziotesschi- there's many different kinds, some closer to grindhouse, some focusing on human drama, still others closer to giallo; this one is noir influenced. In these films you can see the massive influence that Euro crime hand on such 'visionaries' as Quentin Tarantino and especially Brian De Palma. True, they had bigger budgets and made the films look more refined but this is the wellspring of the modern Neo-noir and artistic thriller of today, taking things the next step after Hitchcock created the template. Absolutely phenomenal film!
Look at his films Caliber 9, The Italian Connection, and The Boss for more great Euro Crime to see where this type of artistic thriller came from.