So what are daily ops? Bethesda describes them as “instanced, randomized, repeatable encounters” that can be run, er, daily for new challenges and rewards. Daily ops can be undertaken alone or in small groups, and will change the specifics of each mission so that successive runs won’t be completely predictable.
“We’re particularly excited to implement randomized enemy mutations, which are unique effects that will apply to all enemies you encounter in a Daily Op,” said the studio. “For example, creatures that explode on death, or that can only be killed by a melee hit will challenge teams to work together and strategize how to take them down efficiently.”
— Fallout (@Fallout) September 14, 2020