What do you mean by the allusion Achilles Foot?
Achilles’ Heel means the one weakness in an otherwise invincible thing. Achilles was the half-mortal son of the nymph Thetis, who dipped him in the River Styx to make him immortal. Unfortunately, she missed his heel, which she held; it remained mortal. Paris shot Achilles in the heel, presumably with a poisoned arrow, thus killing him where no other man could.