Here is the full list of all 51 Alpha Protocol trophies - there are 39 bronze, 9 silver, 2 gold and 1 platinum.
Earn All Trophies
Achieve the maximum SMG Critical Hit Multiplier 7 times in your career.
Turn all your enemies into allies in one single career.
Complete Alpha Protocol on Hard difficulty setting.
Refrain from killing in cold blood.
Put an end to Halbech and Alpha Protocol.
Romance all the ladies in Alpha Protocol in a single career.
"Romance" SIE.
Romance Scarlet.
Romance Mina.
Gain Marburg's respect and best him in combat.
Stop the plot to destroy the Roman History Museum.
Romance Madison.
Acquire the vast majority of Intel available in the game.
Spare Konstantin Brayko.
Allow Shaheed to Live.
Join Halbech and stop Alpha Protocol.
Complete Alpha Protocol using the Recruit background.
Complete Alpha Protocol.
Let your gun do the talking.
Discover the identity of Sung's assassin.
Reconcile with Alpha Protocol and stop Halbech.
Prevent a riot from killing hundreds in Taipei.
Complete the game without being seduced.
Alienate "secret agent" Steven Heck.
Complete Operation True Heirs.
Prevent the assassination of President Ronald Sung.
Complete 5 missions wherein 6 different gadgets are used.
Across 90 dialogue choices, you've used each stance at least 25% of the time.
Score 100 head shots with the Assault Rifle.
Complete Operation Deus Vult.
Provoke Marburg into a fatal duel.
Save Madison Saint-James from certain death.
Complete 3 missions with less than 5 kills and with no enemies alerted to your presence.
Gain Liked reputation status of 3 people (who must all Like you at the same time).
Forge a Partnership with Sergei Surkov.
Kill Surkov for lying to you.
Complete Operation Blood Feud.
Eliminate Konstantin Brayko.
Score 100 Critical Hits with the Pistol.
Bypass 20 electronic devices.
Score 100 Critical Hits with the Shotgun.
Pick 10 locks.
Complete Operation Desert Spear.
You Evaded (or defeated via Takedown moves) 75 enemies.
Assassinate Sheikh Shaheed.
Hack 10 computers.
Defeat 50 enemies with CQC.
Get 3 people to hate you (who must all hate you at the same time).
Complete the Training Mission.
Have 100 placed devices detonate.