2. Hosts who have a clear path to the boss fog but decide to turn around and pick up the item the invader just dropped, allowing themselves to get one-shotted by sorcery/pyro.
3. Hosts who have a clear path to the boss fog but decide to turn around and follow the retreating invader throughout the area, only to get cut down by PvE.
4. Hosts who hide in a corner of the boss room and don't heal their phantoms.