There are 50 achievements with a total of 1000 points.
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Missing in Action 5
Save your crew from an overwhelming attack
Very Elusive 10
Return to active duty
The Convict 10
Successfully recruit the biotic Convict
The Krogan 10
Successfully recruit the krogan
The Archangel 10
Successfully recruit Archangel
The Professor 10
Successfully recruit the Professor
The Quarian 10
Successfully recruit the quarian
The Justicar 10
Successfully recruit the Justicar
The Assassin 10
Successfully recruit the Assassin
Friend or Foe 10
Obtain geth technology
Colony Defense 25
Defend a human colony from attack
The Prodigal 10
Gain the loyalty of the Cerberus Officer
Ghost of the Father 10
Gain the loyalty of the Cerberus Operative
Catharsis 10
Gain the loyalty of the biotic Convict
Battlemaster 10
Gain the loyalty of the krogan
Fade Away 10
Gain the loyalty of Archangel
The Cure 10
Gain the loyalty of the Professor
Treason 10
Gain the loyalty of the quarian
Doppelganger 10
Help the Justicar resolve her mission
Cat's in the Cradle 10
Gain the loyalty of the Assassin
A House Divided 10
Hack a geth collective
Ghost Ship 25
Complete the investigation of a derelict alien vessel
Suicide Mission 50
Use the Omega 4 Relay
Mission Accomplished 125
Save humanity throughout the galaxy from certain annihilation
Against All Odds 15
Survive suicide mission
Insanity 75
Complete the game on the "Insanity" difficulty level without changing the setting
No One Left Behind 75
Keep your team alive through the suicide mission
Long Service Medal 75
Complete Mass Effect 2 twice, or complete it once with a character imported from Mass Effect 1
Paramour 50
Successfully pursue a relationship with a teammate
Head Hunter 10
Perform 30 headshot kills with any weapon on humanoid targets
Brawler 10
Shoot and kill 20 enemies while they're knocked back by a punch
Big Game Hunter 10
Thresher Maw defeated
Tactician 10
Hit 20 different targets with multiple biotic powers to combine the effects
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
Overload Specialist 15
Disrupt the shields of 25 enemies
Warp Specialist 15
Warp the barriers of 25 enemies
Incineration Specialist 15
Incinerate the armor of 25 enemies
Operative 15
Complete a mission discovered by scanning an unexplored world
Agent 50
Complete 5 missions discovered by scanning unexplored worlds
Prospector 5
Retrieve mineral resources by scanning and probing a planet in the galaxy map
Explorer 10
Visit 100% of the planets in an unexplored cluster
Power Gamer 10
Reach Level 30 with one character
Scholar 15
Unlock 15 new Mass Effect 2 codex entries
Technician 15
Obtain 10 technology upgrades
Weapon Specialist 15
Fully upgrade a weapon
Scientist 10
Complete any research project in the Normandy's laboratory
Fashionista 5
Personalize your armor in your quarters on the Normandy
Power Full 15
Evolve any power
Highly Trained 15
View all advanced combat training videos at Shepard's private terminal.