Here is the full list of all 12 The Perfect Sniper trophies - there are 8 bronze, 3 silver and 1 gold.
Complete the Story Mode
Uncover the Romano Leader
Hit 30 Targets in 60 Seconds
Hit 15 Targets in 60 Seconds
10 Minute Session
5 Minute Session
Easter Egg
Take down a Romano Capo
Death from Above
Tyrone at it again!
Get your first Headshot
Complete the Tutorial Mission