Gain access to the jail

Assassinate facility leaders

Pacify Lenny the Limp

Make contact with the Ethereal hive mind.

Build the Gollop Chamber.

Build a S.H.I.V

In a single game, complete every Autopsy.

Build the Hyperwave Relay.

Kill an alien while flying. Single player only.

Staff the Engineering Department with 80 engineers.

Gain access to the lowest level in your base.

Kill 500 aliens.

Complete Sequence 12.