Full list of all 59 Mass Effect 2 trophies - 50 bronze, 6 silver, 2 gold and 1 platinum.
The base game contains 55 trophies, and there are 2 DLC packs containing 4 trophies.
Keep your team alive through the suicide mission
Save humanity throughout the galaxy from certain annihilation
Complete Mass Effect 2 twice, or complete it once with a character imported from Mass Effect 1
Survive suicide mission
Use the Omega 4 Relay
Successfully pursue a relationship with a teammate
Reach Level 30 with one character
Gain the loyalty of the Professor
Gain the loyalty of the krogan
Thresher Maw defeated
Gain the loyalty of the Assassin
Successfully shut down the rogue VI in Project Overlord
Collect 6 Cerberus data packets scattered across Aite
Hack a geth collective
Fully upgrade a weapon
Help the Justicar resolve her mission
Obtain geth technology
Successfully recruit the Justicar
Successfully recruit the Assassin
Incinerate the armor of 25 enemies
Gain the loyalty of Archangel
Gain the loyalty of the quarian
Complete 5 missions discovered by scanning unexplored worlds
Shoot and kill 20 enemies while they're knocked back by a punch
Successfully recruit the Quarian
Complete the investigation of a derelict alien vessel
Gain the loyalty of the Cerberus Officer
Gain the loyalty of the Cerberus Operative
Confront the Shadow Broker
Warp the barriers of 25 enemies
Disrupt the shields of 25 enemies
Kill enemies with 5 different heavy weapons during the game
Gain the loyalty of the biotic Convict
Defend a human colony from attack
Successfully recruit the Krogan
Hit 20 different targets with multiple biotic powers to combine the effects
Successfully recruit Archangel
Obtain 10 technology upgrades
Complete any research project in the Normandy's laboratory
Successfully recruit the Professor
Make 20 enemies scream as they fall or are set on fire
Gain the loyalty of the thief
Visit 100% of the planets in an unexplored cluster
Complete a mission discovered by scanning an unexplored world
Evolve any power
Successfully recruit the biotic Convict
Perform 30 headshot kills with any weapon on humanoid targets
Retrieve mineral resources by scanning and probing a planet in the galaxy map
Unlock 15 new Mass Effect 2 codex entries
View all advanced combat training videos at Shepard's private terminal.
Return to active duty
Personalize your armor
Save your crew from an overwhelming attack
Acquire all trophies
Complete the game on the "Insanity" difficulty level without changing the setting
Complete the Arrival DLC ("Arrival" downloadable content)
Survive all five waves in the battle for Object Rho ("Arrival" downloadable content)
Rescue Dr. Amanda Kenson without attracting hostile attention ("Arrival" downloadable content)
Gain the loyalty of the mercenary ("Cerberus Pack" downloadable content)