What was thors biggest accomplishments?

Thor's biggest accomplishments include his role as a key figure in Norse mythology, where he is known for defeating the serpent Jörmungandr during Ragnarök, the end of the world. He also famously wielded his enchanted hammer, Mjölnir, to protect the gods and humanity from giants and other threats. Additionally, Thor's character has been popularized in modern culture through comic books and films, making him an iconic superhero figure.