Mass Effect 2 achievements

77.86%

Operative

Complete a mission discovered by scanning an unexplored world

78.64%

Colony Defense

Defend a human colony from attack

79.03%

The Krogan

Successfully recruit the Krogan

81.09%

The Convict

Successfully recruit the biotic Convict

81.15%

Technician

Obtain 10 technology upgrades

83.04%

Scientist

Complete any research project in the Normandy's laboratory

83.26%

Head Hunter

Perform 30 headshot kills with any weapon on humanoid targets

84.76%

The Professor

Successfully recruit the Professor

84.82%

Scholar

Unlock 15 new Mass Effect 2 codex entries

85.65%

The Archangel

Successfully recruit Archangel

85.76%

Prospector

Retrieve mineral resources by scanning and probing a planet in the galaxy map

86.71%

Merciless

Make 20 enemies scream as they fall or are set on fire