Adem channeled the relentless menace of every revenge-tragedy villain he’d ever watched or played, his lightsaber blade viciously raking the ancient stone of the platform in a few superfluous, hopefully intimidating moves. He prowled across the platform and waited for Laren to fire another shot as he continued his aggressive approach.
Of course, Adem had no intention of killing the Pantoran, but he wasn’t about to tell him that. So far, Laren was reacting as Adem had hoped he would to his “maniacal Sith with a penchant for drama” act, and the fight had started smoothly. Adem enjoyed playing to the expectations created by cheesy old stories soldiers were told about Jedi peculiarities, and Laren had bought it for the moment. The Umbaran wondered if lightly wounding Laren’s arm so quickly might have been hasty, but it was undoubtedly feeding into the positively electric tension in the atmosphere.
Several minutes before Laren had freed himself, Adem had awoken just outside the arena. He had been similarly bound and blinded, and just as confused as Laren. Upon freeing himself with his lightsaber and some very careful telekinetic maneuvering, he had taken the opportunity to examine his surroundings, noting the prostrate man on the stone platform, and made his way down through the foliage. As he had done so, he had noticed thin wiring intermingled with the vines along some of the trees and traced it to what appeared to be a directional microphone. It was rather unlikely that the ancient Massassi had any need of such a thing. That skin-crawling feeling of being watched had started to creep up Adem’s spine, and he could have sworn he had seen a drone of some kind dart through the trees. They were not alone, that much was certain.
The Umbaran had decided that if someone was indeed watching him, he was going to give them a show. Laren looked like a reasonably well-trained soldier, but also someone with the good sense to know that lightsabers hurt people very badly and that he should do his best to avoid them. Could Adem have killed him while he was unconscious? Probably, but the thought had curdled his stomach, aside from being boring to watch for their invisible audience. No half-decent, let alone self-respecting, trouper put on a boring show. No, he had decided to craft a charade that would make men weep.
Laren fired twice more, breaking the Arconan’s reverie, and Adem promptly sidestepped the volley, then continued the movement into a twirl. He punctuated the turn by hurling his lightsaber in a wide arc, the blade a whirling yellow disc bearing down on Laren’s left flank. The Yeoman ducked with ease, then looked back down the stairs to see his opponent had moved to their foot while he wasn’t looking. Adem’s weapon loyally spun back into his hand, fingers closing around it as he filled his bones with the Force, muscles pulsing with unnatural strength. A powerful jump carried Adem up the stairs in an arc, and he coiled his body around to prepare to kick Laren back down to the platform below.
Adem was more than a little surprised to find that the Pantoran was ready for him, catching Adem’s leg in the crook of his left arm. Laren’s free hand suddenly produced a dagger, and he reached around Adem’s thigh in one swift motion to jab him in the back of his leg. He then used Adem’s momentum to send him crashing into the ground, pulling on the Umbaran’s leg, dragging the stunned Jedi around him and sending him tumbling back down the stairs like a trash bag.
The trouper mentally swore very loudly with each painful thump against the stone. Adem saw clearly, for someone falling down a staircase, anyway, that he had woefully underestimated the strength of the Force-blind soldier.
Laren did not spare Adem a moment to get his bearings. He pounced from halfway down the stairs, intent on plunging his dagger into the reeling Umbaran’s spine. Fortunately for Adem, he rolled over just in time to telekinetically push Laren away from him. He went sailing over Adem and tumbled across the center of the platform, rendered prone for a precious few moments. Afforded no time to heal his wound, Adem instead numbed it with the Force so his body could inconvenience him later, when his life was in less peril.
The platform gave a baleful shudder with the impact, and the wind did nothing to help the feeling that it was far too unstable to stand on safely. Both men struggled to their feet, albeit very carefully.
“Wh… What kind of pathetic throw… was that?” Laren grunted, his eyes shifting around the arena, looking for his knife. The lucky bastard found it only a couple meters away. He snatched it up and fixed his eyes back on Adem.
“You... doubt my powers?” a slightly woozy Adem shot back.
“Oh, spare me. It was too slow. You’re holding back. I don’t like having my intelligence or my ability insulted.” Adem swallowed at the remark. His act wasn’t good enough. Laren was onto him.
“Well, you know… wow the crowds, right?”
Laren’s eyes narrowed and he caught his breath. “So just who are you showing off for?”
“Same people you are, I’d suspect. The trees have eyes and ears, apparently.”
“A staged, monitored fight against a Jedi? Wonderful.”
“Who’d you peeve enough to get a matchup like this, I wonder?” Adem tried to keep up the stall long enough for the platform to stop shaking with their movement.
“Well, what kind of thing would you say now? ‘There can be only one!’” Laren mocked. His eyes showed no indication of holding back and Adem doubted that he could do so any more. He tightened his grip around his lightsaber, let that familiar snap-hiss comfort him once more, and steadied himself for the next attack.
Syntax
Should really have commas or some sort of interrupting punctuation around "what he assumed was" for the sake of flow.
Be careful of repetition. "sound of what sounded" would be more beneficial as "noise of what sounded". It keeps the reader engaged as well.
Why the capital on "Eastern"? It isn't a proper noun, so not needed.
Same as above. "Arena" on its own isn't really part of the title anymore and doesn't need a cap.
Should be "he saw were" since it is plural.
Story
At the risk of sounding blunt, this reads like a thesis. Word choice and flow is very important to the story you are writing. It dictates the feel and interest of the reader. Something to keep in mind.
How did he do this? It is quite important as a reader to understand what is going on here. It seems as if you couldn't come up with a realistic way to do it, so you glossed over the corner you had written yourself into.
The problem with this entire section is that the location has already been described before your post, so this becomes redundant and wasted space. You can touch on it, but devoting your largest paragraph to merely describing the same thing that the venue text covers hurts your flow.
Realism
Minor tick, but given that his feet were bound it would be difficult to shake a single boot.
A bit of a bigger hit in realism here. As can be clearly seen in any of the films, sabers hurt. They hurt a lot. Even if you still go on fighting after it (as was the case with Finn v. Ren) they still felt it and it affected them. I don't see that demonstrated here.