The film follows the struggle between seven archangels ("Arcs") and seven fallen angels for control over the souls in Purgatory. Darkness has almost completely taken over, and the previous Arcs have either disappeared or fallen into despair—for example, the angel Amitiel now lives as a prostitute named Jade.
It looks like you're referring to the 2007 Australian action-horror film (often subtitled as La furia degli angeli in Italian releases). This cult classic is a gritty, low-budget supernatural thriller that stars the late Andy Whitfield in his first major role. Film Overview: Gabriel (2007) Genre : Action, Dark Fantasy, Horror, Thriller Director : Shane Abbess
: Andy Whitfield (Gabriel), Dwaine Stevenson (Sammael), Samantha Noble (Amitiel/Jade)
Gabriel is the last Archangel sent to restore the light. To do so, he must assume human form, navigate the seedy city of vice, and defeat the leader of the fallen, Sammael. As he battles through gun-toting followers and demonic entities, Gabriel must also fight the unfamiliar human emotions that threaten to compromise his mission. Gabriel (2007) - IMDb
: A stylized, noir version of Purgatory , depicted as a decaying urban city trapped in perpetual night The Story