What are polyphemus's weaknesses?

Polyphemus, the Cyclops from Greek mythology, has several weaknesses. His arrogance and pride make him overconfident, leading him to underestimate Odysseus and his companions. Additionally, his singular eye makes him vulnerable to blinding, which Odysseus exploits. Lastly, his isolation on a remote island limits his ability to seek help or defend himself effectively against intruders.