Earn a Rune

Complete the first mission of the campaign

Brew a fine whisky for Hershel.

Stealth kill an enemy while they are having a conversation

Enter the Syrian tomb

Learn all the skills within one skill tree.

Safely return to the surface.

Save the Homestead on the Shelter Plane at the End of Time.

Kill a Viper who is strangling a squadmate

Kill a Sectoid who is currently mind controlling a squadmate

Upgrade a weapon

Come face-to-face with Mangoth himself.

Find the White Witch!