Try unequipped the steel sword. You can attack even if the sword is unequipped by hitting the z button next to an enemy, equipping is only used so you don't accidentally talk to npcs or enter buildings, and to select a weapon to attack with that's not the automatic choice (the most damage-dealing weapon).
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 "Upgrade Complete 2"){kind=icon}
 "Infectonator 2"){kind=icon}
 "Can Your Pet?"){kind=icon}
Try unequipped the steel sword. You can attack even if the sword is unequipped by hitting the z button next to an enemy, equipping is only used so you don't accidentally talk to npcs or enter buildings, and to select a weapon to attack with that's not the automatic choice (the most damage-dealing weapon).