Trophies - Successfully complete one of the following tasks to get a trophy:

I am in control (Bronze): Complete the 1st Tutorial.
I have it in my blood (Bronze): Complete the 2nd Tutorial.
No more anxiety attacks (Bronze): Complete the 3rd Tutorial.
Completed Act 1 - Easy (Bronze): Complete Act 1 - Easiest Difficulty.
Completed Act 2 - Easy (Bronze): Complete Act 2 - Easiest Difficulty.
Completed Act 3 - Easy (Bronze): Complete Act 3 - Easiest Difficulty.
Completed Act 4 - Easy (Bronze): Complete Act 4 - Easiest Difficulty.
Completed Act 5 - Easy (Bronze): Complete Act 5 - Easiest Difficulty.
Completed Act 6 - Easy (Bronze): Complete Act 6 - Easiest Difficulty.
Completed Act 7 - Easy (Bronze): Complete Act 7 - Easiest Difficulty.
Completed Act 8 - Easy (Bronze): Complete Act 8 - Easiest Difficulty.
Ready to play with the big boys (Bronze): Complete Act 9 - Easiest Difficulty.
Completed Act 1 - Assassin (Bronze): Complete Act 1 - Assassin Difficulty.
Completed Act 2 - Assassin (Bronze): Complete Act 2 - Assassin Difficulty.
Completed Act 3 - Assassin (Bronze): Complete Act 3 - Assassin Difficulty.
Completed Act 4 - Assassin (Bronze): Complete Act 4 - Assassin Difficulty.
Completed Act 5 - Assassin (Bronze): Complete Act 5 - Assassin Difficulty.
Completed Act 6 - Assassin (Bronze): Complete Act 6 - Assassin Difficulty.
Completed Act 7 - Assassin (Bronze): Complete Act 7 - Assassin Difficulty.
Completed Act 8 - Assassin (Bronze): Complete Act 8 - Assassin Difficulty.
Completed Act 1 - The Killer (Bronze): Complete Act 1 - The Killer Difficulty.
Completed Act 2 - The Killer (Bronze): Complete Act 2 - The Killer Difficulty.
Completed Act 3 - The Killer (Bronze): Complete Act 3 - The Killer Difficulty.
Completed Act 4 - The Killer (Bronze): Complete Act 4 - The Killer Difficulty.
Completed Act 5 - The Killer (Bronze): Complete Act 5 - The Killer Difficulty.
Completed Act 6 - The Killer (Bronze): Complete Act 6 - The Killer Difficulty.
Completed Act 7 - The Killer (Bronze): Complete Act 7 - The Killer Difficulty.
Completed Act 8 - The Killer (Bronze): Complete Act 8 - The Killer Difficulty.
Collector Nerd (Bronze): Find 10 reward items.
Kill one, save a thousand Donuts (Bronze): Kill Janice, ex-boss.
Half the man Barry is (Bronze): Kill Kathy, ex-girlfriend.
Bullet Curving Trainee (Bronze): Kill 10 enemies using Curved Bullets.
Shrapnel Storm Trainee (Bronze): Kill 10 enemies using Bullet Explosions.
Boom! (Bronze): Kill one explosive rat.
Up close and personal (Bronze): Kill 15 enemies in close combat.
Fully trained assassin (Silver): Complete Act 9 - Assassin Difficulty.
The Killer (Gold): Complete Act 9 - The Killer Difficulty.
Wanted Master (Platinum): Got all Wanted trophies!

Additionally, there are thirteen secret trophies:

Compulsive Hoarder (Bronze): Find all reward items.
Two is always better than one (Bronze): Kill 2 enemies at once with a single Curved Bullet.
Glad I wasn't there (Bronze): Kill 3 enemies at once with a single Explosive Bullet.
All in the reflexes (Bronze): Kill 3 enemies at once in a single eQM.
Pest Exterminator (Bronze): Kill all explosive rats.
Bullet Curving Expert (Bronze): Kill 100 enemies using Curved Bullets.
Shrapnel Storm Expert (Bronze): Kill 80 enemies using Bullet Explosions.
Heart Breaker (Bronze): Kill Araña with Wesley without mask on The Killer Difficulty.
Between Old Friends (Bronze): Kill The Immortal with Cross on The Killer Difficulty.
Punishing Subordinates (Bronze): Kill The Russian with The Immortal in close combat and The Killer Difficulty.
Butcher would be proud (Bronze): Complete the game in "Close Combat Mode", any difficulty.
Dr. Lobotomy (Bronze): Complete the game in "Headshot Mode", any difficulty.
Catch me if you can (Bronze): 1st position in "Time Attack" Ranking.