In a fire team yesterday (Hi Dune and Big_P), we were wondering what the symbols/names meant. Found this with a search. Skull Effect Juggler - No ammo drops for your equipped weapon Anger Issues - Minions of the Darkness display heightened aggression. Angry - Minions of the Darkness won’t flinch, even after massive damage. Arc Burn - Arc damage from any source is greatly increased. Solar Burn - Solar damage from any source is greatly increased. Void Burn - Void damage from any source is greatly increased. Lightswitch - Minions of the Darkness deal much more melee damage. Nightfall - You will face a relentless army that has never known defeat. If all players die, you will be returned to orbit. Heroic - Enemies appear in greater numbers and are more aggressive. Epic - Heavily shielded and highly aggressive enemies appear in great numbers.