A glitch in the app caused Nightfall and the Weekly Heroic to display all (?) possible skulls. Screencaps attached and complete list below: NEW: - Bloodthirsty: Enemies fire more frequently and more accurately - Chaff: Player radar is disabled - Fresh Troops: Some enemy squads have been fortified with additional reinforcements - Ironclad: More enemies have shields - Match Game: Enemy shields are resistant to all unmatched elemental damage OLD: - Berserk (rename of Angry) - no flinching [spoiler] - Epic - Arc Burn - Solar Burn - Void Burn - Brawler - Lightswitch - Specialist - Juggler - Small Arms - Grounded - Airborne - Catapult - Exposure - Trickle[/spoiler] EDIT: some of the skulls were for nightfall only, but I do not recall which ones