He could use the hammer as a tool in combat. Against his powerful foes in the Naruto universe, the hammer's unique abilities could give him an edge. For instance, he could use it to break through strong defenses that his normal jutsu couldn't penetrate. He might also use it symbolically, to inspire his friends and allies, just as Thor uses it in his own stories.
One possibility is that Naruto somehow gains the ability to wield Thor's hammer. Maybe his strong will and determination, which are similar to the qualities required to lift Mjolnir in the Thor universe, allow him to do so. This could give him new powers, like the ability to control lightning in a different way than he already does with his own chakra-based techniques.
In this fanfic, Naruto might gain new powers or a special status. Since Thor's hammer can only be lifted by those worthy, Naruto lifting it could signify his great character. He could use the power of the hammer in battles against powerful foes in the Naruto universe, like Madara or Kaguya.
Well, in the 'naruto lifts thor's hammer fanfic', apart from Thor, other Asgardians like Heimdall could interact with Naruto. Heimdall, with his all - seeing ability, might have seen Naruto's worthiness from afar. The Hulk could also be involved. Imagine the chaos if the Hulk got jealous of Naruto having the hammer. And from Naruto's side, Kakashi could be there to guide Naruto on how to handle this new power that comes from a different world.
He might be initially confused about how to use it. But once he figures it out, he could start using it like he does his ninja tools, just with much more power. He'd probably hold it in one hand and still be able to do his hand - signs for ninjutsu with the other.
Well, if Naruto got Thor's hammer in fanfiction, it would be a really interesting crossover. Naruto is known for his strong will and determination, which are important qualities to be worthy of the hammer. He might use the hammer to protect the ninja world from greater threats that his normal jutsu couldn't handle. For example, if there was a super - powerful enemy that was immune to ninjutsu, the hammer's magic could be the solution.
In the fanfiction, if Naruto picks up Thor's hammer, he might gain some new powers related to Thor. Maybe he could control lightning like Thor does. Since Naruto is already powerful in his own right, this could make him nearly unstoppable. He could use the power of the hammer in his battles against powerful foes in the Naruto universe.