The sudden burst of pain died almost as soon as it had begun, dulled by the Force as Tarvitz stepped back from his opponent. The stab had only managed to graze his skin, enough to inflict pain rather than true damage, but any deeper and the fight would have been lost. Tarvitz frowned as the Knight began to walk toward him again, motioning in the air with his lightsaber and driving him toward the arena’s edge by hacking at the air. He was slower than his initial burst of speed had suggested, but that at least could be explained by use of the Force’s amplifying powers. What was more concerning was that there was no obvious rhythm to his attacks.
As Tarvitz tried to decipher the series of strikes and hacking motions his foe made in the air, he came at Tarvitz again, swinging his own blade in a decapitating strike. Tarvitz blocked it, guided more by the Force than recognition of the method behind the attack in question. He was almost at the edge of the arena, a step away from tumbling back over the edge of the crumbling brickwork, before some semblance of the style finally registered in his mind.
“Banlanth, really?” Tarvitz said, bursting out laughing as he finally saw the pattern behind the Knight’s slashing, “Is this the feared power of the Knights of Ren? A style reserved for apprentices?”
“I’m not-” the Knight answered, a flustered note managing to break through the monotone expressions of his modulated voice “You’re hardly one to talk, so far you’ve not landed a single blow on me.”
“A fair point,” Tarvitz conceded, “So, let’s see you keep up with this, then.”
Making a number of exaggerated motions, he dropped into an elaborate stance. Lightsaber held above his head, point directed toward the sky, knees bent in an impractically heroic pose, and the palm of his other hand outstretched with his fingers curled into a claw-like gesture. The Knight simply stood there, head tilted to one side at the sudden display, apparently unsure of just what to make of this.
“Emperor’s Black Bones, what are you trying to-” he started, before Tarvitz pulled back his free hand and made a number of overly-dramatic displays in the air. The Knight was focused purely on him, so utterly baffled at the apparent stupidity, that he apparently failed to notice just Tarvitz reaching out with the Force. Or, for that matter, the sound of straining repulsorlift drives roaring toward the back of his head.
The Knight picked up on what was going on at the last second, either hearing the noise over the waterfall’s roar or forewarned by his own connection to the Force. He dived to one side as his droid swept past, dragged through the air by Tarvitz’s telekinesis. One flailing metal arm clipped his shoulder as it passed, impacting with a resounding crack and sending the Knight rolling away. Tarvitz’s halted his exaggerated distractions as the droid swept toward him, swinging out with its blade and parting its head from his shoulders.
Without pausing, Tarvitz dragged a pair of throwing daggers from his belt, hurling them both toward the prone Knight as he attempted to rise. Caught off-guard, the Knight raised his blade, reducing one to molten durasteel but only striking the other’s edge. Deflected, it missed his chest, instead lodging itself deep within the Knight’s right thigh.
To his credit, the Knight neither yelled nor screamed, offering only a pained grunt as the blade pierced both clothing and flesh. He still tried to rise to his feet, ready to fight again, but another Telekinetic push from Tarvitz sent him sprawling to the ground and rolling to the arena’s far edge.
With his opponent down, Tarvitz looked toward the items held in by the decapitated droid. One an angular white box of a data cube, the dead drop he had been seeking to locate. In the other, a golden torc of an ancient design, bearing a stylised intricate and jeweled insignia of a long-dead Sith Lord. Tarvitz pocketed them both without hesitation.
“I’m going to leave you now,” Tarvitz called out to the wounded Knight, “Alive, not dead, don’t worry about that. But just take this word back to your masters - The First Order aren’t welcome here. Try this again, and none of you will walk away alive.”
Tarvitz turned, departing swiftly without another word, racing across the bridge and back into the depths of the jungle.
Positive Takeaways
Your descriptions and application of in-world knowledge is fantastic. It truly is. It would be beneficial to leverage this more unilaterally, into not just world building but into the conflict itself. If the encounter held just as much depth as the scenery and said scenery's history, then it would be difficult to beat you.
Areas For Improvement
Commas. These are probably one of the greatest banes of writing. Used too much or used too little, they have so many rules and exceptions that it can make anyone's head spin. Sometimes, it can help to read it out loud and then the flow of it will make more sense. In this case, that flow would be improved thanks to the complex sentence structure by adding the second comma shown.
Much like above, the flow of a sentence can be interrupted based on syntax. In this case, "hooded" is jarring and stops the reader from continuing to enjoy the narrative unimpeded. It's grammatically incorrect and that stands out.
Story Pacing
This is something that can really make or break an opening post in a match. This post is charged with not just defining the situation that leads to combat, but also including that combat itself. It's a balancing act. A good rule of thumb is to have actual conflict, especially in a 2+2 format, take up at least 50% of the opening post. Of your 700 words, it's only the last paragraph that has this conflict. A lot of the time devoted to set-up could have been given to creating interesting action with narrative interwoven instead.