Medal of Honor

ME1: Complete the game on any difficulty

Meritorious Service Medal

ME1: Complete Ilos

Council Legion of Merit

ME1: Complete Virmire

Charismatic

ME1: Use Charm or Intimidate to resolve an impossible situation

Colonial Savior

ME1: Complete the Bring Down the Sky mission.

Turian Ally

ME1: Complete 5 missions with the turian squad member

Medal of Heroism

ME1: Complete Feros

Completionist

ME1: Complete the majority of the game

Principled

ME1: Accumulate 75% of total possible Paragon or Renegade points

Throw Mastery

ME1: Use biotic Throw 25 times

Medal of Exploration III

ME1: Land on 8 uncharted worlds

Electronics Specialist

ME1: Use Shield Overload 25 times

Honorarium of Corporate Service

ME1: Complete Noveria

Asari Ally

ME1: Complete 5 missions with the asari squad member

Medal of Exploration II

ME1: Land on 4 uncharted worlds

Soldier Ally

ME1: Complete 5 missions with the Alliance soldier squad member

Sentinel Ally

ME1: Complete 5 missions with the Alliance sentinel squad member

Medal of Exploration I

ME1: Land on an uncharted world

Search and Rescue

ME1: Locate Dr. T'soni in the Artemis Tau cluster

Archivist

ME1: Find all primary Alien: Council Races, Extinct Races and Non-Council Races codex entries

Spectre Inductee

ME1: Become a Spectre

Quarian Ally

ME1: Complete 5 missions with the quarian squad member

Krogan Ally

ME1: Complete 5 missions with the krogan squad member

Distinguished Service Medal

ME1: Complete Eden Prime