That's tavern_keeper's build. Most people are familiar with it. She used to just use a torch and be utterly useless to the team. Now sometimes she brings some sort of blade and can actually get hits in but still mostly useless...
Just kick the person and then slash them.
Or run them over with a horse.
Or double-team.
I'm sure crushthrough would work too, or maybe that random chance crossbows have of shooting through a shield.