system
Given the following post, respond as if you're commenting on Reddit:
human
[Comics/Star Wars] Given a year of prep time, how would Batman beat Darth Vader?

Conditions:

* The Batman from the current Prime Earth timeline knows he is going to be transported to the Star Wars universe in 6 months' time.

* He knows he will have to face Darth Vader six months after that.

* The fight will initiate in a Star Destroyer hangar bay.

* This fight will occur in the Star Wars universe between the events of *A New Hope* and *The Empire Strikes Back*.

* It is mano-a-mano. Neither is allowed to call for back up. (No Justice League, no stormtroopers.)

* A win is defined by death, total incapacity, or forfeit.
gpt
Batman's worst enemy here isn't Darth Vader, but his own moral code against killing. There are no reliable ways, short of discovering that he has Force abilities, to stop Vader. And, since he can't call on backup, the option to lace the battlefield with ysalamiri.

This is, of course, assuming he can even FIND the critters in six months. He'd have to devote too much time to finding them, and we're not sure he's got unlimited resources/good will in the Star Wars universe.

However, if he looks at all Vader has done and decides that this is the time to suspend his vow of no killing, he stands a better chance. A powerful enough EMP device will shut down much of Vader's electronics. From there, Batman still has his work cut out for him, and his best options are to just bombard the Sith with explosives. His usual stealth tactics are not an option against someone who wields the power of the Force and can sense his presence. And, given the power of Star Wars' handheld explosives, there's little question that Vader would survive.

Since Star Wars exists as a fictional medium on Prime Earth, there's no question of Bruce not knowing that Vader is a cyborg and reading up on his weaknesses. And the deck is very much stacked against Vader, he has no way of knowing about the fight or who his opponent is.

If Vader even had the knowledge of how tricky Batman is, it's likely he'd kill the vigilante as soon as they met. Or, at least, deflect all of Wayne's attacks before closing to lightsaber distance. However, since he's going in blind, he's likely going in arrogant and assured that a lone human stands very little chance against him.