AKA - 'completionist' as they like to call themselves. We all know one. Poor saps :/
checking every filing cabinet and table
picking up every piece of junk
doing every quest in the never ending and very repetitive loop of settlement kidnappings/etc
exploring every marker on the map, every car , every house, every cave
talking to every NPC and using every dialogue option
this game must be torture for these guys :/ hell on earth, i bet