Achievements:ACHIEVEMENT – HOW TO UNLOCKCampaign Veteran (25 points) – Complete all single player levels 1-5. Team Veteran (20 points) – Complete “Hydroponics” in Co-op Assault. Fighting Light (20 points) – Complete any single player level without using any items. Against the Odds (25 points) – Complete single player levels 1-5 on Elite difficulty. Ain