To unlock the following Hitman Paris DLC Trophies, complete the following tasks.

Trophy	How to unlock
City of Light (Gold)	Reach Paris Mastery Level 20.
Paris Escalated (Bronze)	Complete Level 5 of an Escalation Contract set in Paris.
So Many Ways to Stop the Show (Silver)	Complete all Opportunities in The Showstopper.
Well Prepared (Bronze)	Select a Starting Location and use an Agency Pickup to smuggle an item into Paris.
When No One Else Dares (Bronze)	Complete The Showstopper.