In some fanfics, there might be a plotline where Palpatine tries to corrupt Anakin even further during the battle, using psychological warfare. Anakin, on the other hand, has to resist this while also fighting for his life. This adds a layer of psychological drama to the physical fight between them.
It really depends on how the author writes it. If the fanfic focuses on Anakin's potential and his growth beyond what we saw in the movies, he could win. For example, if he has fully mastered some new form of lightsaber combat or Force ability.
Anakin might betray Palpatine to save someone he loves. If Palpatine threatened Padmé in some way, Anakin would surely turn against him. After all, Anakin's love for Padmé is one of his strongest driving forces.
Another important aspect is the emotional turmoil of Anakin. A great fanfic will show his struggle between the light and the dark side. He loves Padmé and his friends in the Jedi Order, but at the same time, he is drawn to Palpatine's offers of greater power to protect them. It's like a constant battle within him, and a good fanfic will explore this in depth. In some fanfics, Anakin's dreams about Padmé's death are a central part of his emotional turmoil and his journey towards the dark side.
Yes, there are some great Anakin kills Palpatine fanfics. You can try searching on fanfic platforms like Archive of Our Own. Some fanfics might explore different motives for Anakin to kill Palpatine, like a sudden realization of Palpatine's true evil nature before it's too late in the timeline. Others could be set in alternate universes where Anakin has a different backstory or set of circumstances that lead him to take this action.
One possible plot could be that Anakin discovers Palpatine's plan to destroy the remaining Jedi earlier than in the original story. This early discovery gives him the chance to turn against Palpatine and kill him to save the Jedi order. Maybe he finds some hidden evidence that convinces him once and for all of Palpatine's true intentions.
One of the best is his fall to the dark side in 'Revenge of the Sith'. We see his inner struggle with his fear of losing Padmé, and how Palpatine manipulates him. It's a tragic story of a once - great Jedi being consumed by his emotions.
Anakin Skywalker's story is one of great tragedy. Born into slavery, he had a difficult start. As a Jedi, he was in a relationship with Padmé Amidala, which was against the Jedi Code. His fall to the dark side was gradual. Palpatine manipulated him. He committed many atrocities as Darth Vader. But deep down, there was still good in him, which was shown when he sacrificed himself to destroy the Emperor.
One great 'Anakin Skywalker Fanfic' is 'The Chosen One's Redemption'. It shows Anakin's journey towards redemption in a really interesting way. It delves deep into his inner turmoil and how he tries to make up for his past mistakes.