Complete one combat challenge without taking damage (any character)

Make your first cut with Calibrus.

Investigate the environment for the first time.

Kill a zip-lining enemy player in multiplayer.

Kill an alien while flying. Single player only.

Build the Hyperwave Relay.

Build a Workshop.

Complete all conversations with the Endurance crew.

Acquire Revenant

Kill 150 aliens.

Complete Visari Square on any difficulty level

Kill 25 Helghast using melee attacks

Build a S.H.I.V