Kill 30 Helghast using the StA3 fixed gun emplacement

Kill 5 Helghast in 15 seconds whilst on foot and maintaining at least 85% health

Kill 3 Helghast at once using the surrounding environment

Defeat the Goliath in the single player Campaign.

Completed "The American Dream"

Completed "Picking up the Trail"

Completed "Rescue from Paradise"

Completed "The Waters of Life"

Reached Level 8 with Good Karma

Completed "Scientific Pursuits"

Completed "The Replicated Man"

Completed "The Power of the Atom"

Took the G.O.A.T.