A new expansion for Aliens: Fireteam Elite named "Pathogen" is now available and you can watch the trailer below. The expansion brings the new 'Pathogen' campaign with 3 new missions, 8 new weapons (2 for each weapon type), 1 new perk for each class kit, 13 new weapon attachments, 2 new outfits (for all 7 class kits), 6 new head accessories, 21 new weapon colors, 10 new decals, and 10 new emotes.
Aliens: Fireteam Elite - Pathogen Gameplay Trailer
Video description: A mysterious pathogen is wreaking havoc on planet LV-895. Join your fellow marines in an all-new campaign that takes you into the heart of the Pathogen hive. Experience new environments, maps, weapons, and more.