ME1: Land on 8 uncharted worlds

ME1: Complete the Bring Down the Sky mission.

Kill 250 enemies in Mass Effect 1, 2 or 3

Dispose of a nuclear weapon.

ME1: Complete 5 missions with the Alliance soldier squad member

ME1: Complete 5 missions with the asari squad member

ME1: Complete 5 missions with the krogan squad member

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

ME1: Land on an uncharted world

ME1: Complete Eden Prime

Finish the game with at least one cub alive.

Finish the game with at least three cubs alive.

Finish the game with all cubs alive.