I understand the question you're posing is more of a hypothetical or fictional scenario, as Thor and Kratos are likely characters from a movie, comic book, or other form of media. However, I'll approach this question from a logical and analytical standpoint, as if we were comparing the fictional abilities and strengths of two characters.
"Could Thor, the Norse god of thunder and lightning, with his mighty hammer Mjolnir and control over the elements, defeat Kratos, a seemingly formidable opponent with unknown powers and abilities? The answer to this question depends greatly on the specific abilities and weaknesses of both characters, as well as the context and rules of their fictional universe.
Thor, being a deity in Norse mythology, possesses incredible strength, durability, and mastery over thunder and lightning. He has been depicted as a fierce warrior and protector of Asgard. On the other hand, Kratos, assuming he is a formidable opponent, may have his own unique set of abilities and strengths that could potentially match or even surpass Thor's.
In a direct confrontation, the outcome would likely hinge on several factors, including strategy, tactics, and the specific abilities and limitations of each character. It's impossible to definitively state whether Thor could defeat Kratos without more information about the latter's powers and abilities.
Ultimately, the answer to the question "Can Thor defeat Kratos?" remains speculative and open to interpretation, as it is rooted in the fictional realm of mythology, comics, or other forms of media.