>>719263551
>press menu, open inventory, unequip all your armor and rings, run up to the crabs and fight each one individually while also avoiding their miasma so you don't break your sword. Once your finished you have to open the equipment menu again and go through and manually equip every piece of armor and ring again after navigating the most likely bloated inventory you have. (Since DS2 doesn't remember what armor you were wearing before and doesn't bother highlighting that when you open the equip menu.)
OR
>I press R1 once and watch the big swirly blue thing one-shot all of them.
You genuinely sound retarded. Like actually mentally disabled bro.