Mass Effect 2 achievements

57.50%

Long Service Medal

Complete Mass Effect 2 twice, or complete it once with a character imported from Mass Effect 1

63.11%

Agent

Complete 5 missions discovered by scanning unexplored worlds

66.11%

A House Divided

Hack a geth collective

67.50%

Doppelganger

Help the Justicar resolve her mission

68.00%

Explorer

Visit 100% of the planets in an unexplored cluster

68.22%

Cat's in the Cradle

Gain the loyalty of the Assassin

69.33%

Highly Trained

View all advanced combat training videos at Shepard's private terminal.

69.50%

Against All Odds

Survive suicide mission

69.50%

Treason

Gain the loyalty of the quarian

69.56%

Mission Accomplished

Save humanity throughout the galaxy from certain annihilation

70.06%

Friend or Foe

Obtain geth technology

70.28%

Suicide Mission

Use the Omega 4 Relay

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