Keep your team alive through the suicide mission

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

Reach Level 30 with one character

Successfully pursue a relationship with a teammate

Obtain geth technology

Fully upgrade a weapon

Gain the loyalty of the Assassin

Successfully recruit the Quarian

Successfully recruit the Assassin

Gain the loyalty of the Cerberus Officer

Gain the loyalty of the Professor

Thresher Maw defeated

Survive all five waves in the battle for Object Rho ("Arrival" downloadable content)