Harvest all available civilians in the Alien Campaign

Wipe out all of the Marines in the Colony

Liberate the Matriarch

Complete Marine Campaign on Nightmare difficulty setting

Complete Marine Campaign on Hard difficulty setting

Kill 5 enemies with one burst from the smartgun

Defeat the Praetorian

Locate Tequila

Defeat the Matriarch

Escape from C-Block

Chain a 20-defeated combo in Slayers.

Purchase Zurg's Spaceport