If you’re fighting barehanded against someone with a club (or even sword!) what you want to do is get so close to them they can’t swing it at you and attack the arms they’re holding it with.
As a general rule though you’re better off running away than trying to fight an (even melee!) armed opponent unarmed, or at least picking up a branch or a rock or something
Realizing that my Japanese-derived fighting training involving “attack the arms” actually explains a lot of vidya mechanics from the 8- and 16-bit era
ALT