
Thanks to GM for these, here are the Mass Effect 2 Achievements.
Achievement | How to unlock |
A House Divided (10) | Hack a geth collective |
Against All Odds (15) | Survive suicide mission |
Agent (50) | Complete 5 missions discovered by scanning unexplored worlds |
Battlemaster (10) | Gain the loyalty of the krogan |
Big Game Hunter (10) | Thresher Maw defeated |
Brawler (10) | Shoot and kill 20 enemies while they're knocked back by a punch |
Cat's in the Cradle (10) | Gain the loyalty of the Assassin |
Catharsis (10) | Gain the loyalty of the biotic Convict |
Colony Defense (25) | Defend a human colony from attack |
Doppelganger (10) | Help the Justicar resolve her mission |
Explorer (10) | Visit 100% of the planets in an unexplored cluster |
Fade Away (10) | Gain the loyalty of Archangel |
Fashionista (5) | Personalize your armor in your quarters on the Normandy |
Friend or Foe (10) | Obtain geth technology |
Ghost of the Father (10) | Gain the loyalty of the Cerberus Operative |
Ghost Ship (25) | Complete the investigation of a derelict alien vessel |
Head Hunter (10) | Perform 30 headshot kills with any weapon on humanoid targets |
Highly Trained (15) | View all advanced combat training videos at Shepard's private terminal. |
Incineration Specialist (15) | Incinerate the armor of 25 enemies |
Insanity (75) | Complete the game on the "Insanity" difficulty level without changing the setting |
Long Service Medal (75) | Complete Mass Effect 2 twice, or complete it once with a character imported from Mass Effect 1 |
Master at Arms (15) | Kill enemies with 5 different heavy weapons during the game |
Merciless (10) | Make 20 enemies scream as they fall or are set on fire |
Missing in Action (5) | Save your crew from an overwhelming attack |
Mission Accomplished (125) | Save humanity throughout the galaxy from certain annihilation |
No One Left Behind (75) | Keep your team alive through the suicide mission |
Operative (15) | Complete a mission discovered by scanning an unexplored world |
Overload Specialist (15) | Disrupt the shields of 25 enemies |
Paramour (50) | Successfully pursue a relationship with a teammate |
Power Full (15) | Evolve any power |
Power Gamer (10) | Reach Level 30 with one character |
Prospector (5) | Retrieve mineral resources by scanning and probing a planet in the galaxy map |
Scholar (15) | Unlock 15 new Mass Effect 2 codex entries |
Scientist (10) | Complete any research project in the Normandy's laboratory |
Suicide Mission (50) | Use the Omega 4 Relay |
Tactician (10) | Hit 20 different targets with multiple biotic powers to combine the effects |
Technician (15) | Obtain 10 technology upgrades |
The Archangel (10) | Successfully recruit Archangel |
The Assassin (10) | Successfully recruit the Assassin |
The Convict (10) | Successfully recruit the biotic Convict |
The Cure (10) | Gain the loyalty of the Professor |
The Justicar (10) | Successfully recruit the Justicar |
The Krogan (10) | Successfully recruit the krogan |
The Prodigal (10) | Gain the loyalty of the Cerberus Officer |
The Professor (10) | Successfully recruit the Professor |
The Quarian (10) | Successfully recruit the quarian |
Treason (10) | Gain the loyalty of the quarian |
Very Elusive (10) | Return to active duty |
Warp Specialist (15) | Warp the barriers of 25 enemies |
Weapon Specialist (15) | Fully upgrade a weapon |