Pretty good for a one-shot. I love it. Will you make a sequal for this?

YES THAT'S JUST HORRIBLY DEPRESSING! UGH!
Pretty good words & nice constanct action, plausible AU. Some things are choppy, but you could be very good with more work on description kinda in-the-moment. I like the description of Vader "trudging" and of the RotJ-accurate reasoning. The first big paragraph of Luke and Palpatine's fight is where the choppiness begins, where your sentances are too similar in structure and you seem to have tried to get names or descriptions of both combatants in every one.Keep in mind modifications such as this one that will improve such things; 'Luke felt himself slowly being crushed. HE then used both his lightsaber and Vader's lightsaber to cut through the rails, releasing HIM or HIMSELF'.

yes, it IS depressing. rather too depressing. nicely done, but could we have a comedy next time? I need an antidote for all this melancholy...

it is. Why do I get the feeling Sidious was having flashbacks of his fight with Yoda? :shrug: al well. I actually feel sorry for Luke for the first time...