Inahj swung faster than she'd expected, aiming for where her neck met her shoulders. She ducked and caught his saber on her knife with a rising two-handed parry that forced the blade aside and nearly out of his grip. Snarling, Satsi backhanded a slash that narrowly missed his eyes, continuing the motion into a diving roll through the grit and rock. He chased after her, chaining together rapid strikes.
The Arconan rocked back on her shoulders, abdomen coiling and legs swinging, and flipped upright in time to spear an elbow into the man's ribs as he raised both arms overhead in a powerful chop. She heard the wind go out of him with a muted, tiny crackle, and his rubber-lipped smirk fell into a rictus of pain.
He doubled over. She lifted a foot, put the edge of her boot on top of his kneecap, and stomped down, feeling the ligaments tear as it shifted. Inahj yowled and buckled, saber clattering from his hands. Moving quickly, Satsi planted her feet and pivoted her hips, rocketing forward to kick him in the side of the head, then watched him sprawl flat as white spittle speckled the edges of his lips and blood spotted the sand.
She kicked his silver-hilted saber away and stepped over him, panting hard in short, sharp, exhilarated gasps. Her grip spasmed on her dagger. Her knee ached with delicious phantom pain, bone bruised for its effort.
Inahj rolled on his side, groaning. Satsi sneered down at him, then knelt and started patting at his person even as he batted at her, waving a hand and mumbling, "Don't." Her fingers hovered over his holsters and, after a moment's hesitation staring at the weapons there, she sat back, smirking. No others. Good.
Her trip into the wastelands of Nancora was meant to be simple reconnaissance for infiltration, but she had recognized Inahj on sight. She had seen him often while watching from her brother's shadow. He didn't look dangerous, but his record was long, and his interactions with her brother had been tumultuous at best. Uji had commented of the man that he was of no use to them.
"He is inconsequential," her twin had said. "Do not concern yourself with his like."
"But would he try ta kill yah?" Satsi had insisted, and Uji shrugged one shoulder.
"Given his feelings towards the clan, it is as likely as any other, were we to encounter one another again. He once blamed me for several occurrences, including endangerment of his children."
All this her twin had delivered with a complete lack of concern, but Satsi hadn't shared his blasé attitude. A possible threat was a possible threat, and in her experience sparkies and grudges went together like whores and credits.
Satsi wasn't taking any chances. Eventually, anybody who was a threat to her brother was going to burn.
The recollection passed in a heartbeat as the woman put her blade to the Sith's throat. He blinked at her, brows scrunching in concentration. She dropped her gaze deliberately to the carriers sewn into his robes. "File says you got a couple of brats. Matched set, just like me an' mine. Tell ya what, I'll let ya pick. Should I cut both their throats, or should I leave one alive? Gotta say, I'd recommend the former. Being half a person alone like that, it's worse than dead."
His face twisted up in the satisfying rage she had expected.
What she didn't expect was for his muddled countenance to evaporate entirely, replaced by a clear-eyed, seething glare and a bloody, swollen snarl.
Before she could react, a crushing pressure encircled her windpipe and she dropped her dagger, instinctively clawing at her throat. Her eyes bulged at the sudden lack of air.
"Foolish scum," snarled the recovered man, climbing unsteadily to his feet and standing over her with a hand outstretched. "Do you know how many have failed to kill me? You are just one more sad attempt. You don't know the true power of the Sith!"
Her vision was going dark at the edges. Satsi stopped grasping at her neck and dropped her fingers to her belt, scrabbling desperately. The Sith clenched his soft, corpse-pale hand into a fist and the tight blackness rose in a warm tide behind her eyes.
"You dare to speak of my girls? I will have you suffer. I'll rip out that impudent tongue of yours then carve your throat while you're still breathing and send the remains to your precious brother! I will see him dead too!"
Never, she thought viciously, activating and dropping the grenade she held directly between them. Inahj's glare only had a second to widen in disbelief. Then dioxis gas exploded in a roiling cloud of pale, deathly green.
Satsi, having gagged as soon as he'd shifted his focus and released her, choked back a gasp, scrambling for her breath mask. Coughing into it, the woman dodged blindly to the side and ducked under a long-forgotten archway, feeling her insides burn and throat sting from even the small bit of toxin caught in her airway.
She hoped the Sith was suffocating out there.
Unfortunately, the wind was as wicked as the heat, and the gas quickly dissipated. A moment later, Inahj's ragged voice called out. "You can't hide from me, Tameike! I will find you, and you'll pay!"
Satsi rolled her eyes and pulled down her mask as it grew unbearably hot underneath it. She scanned the area rapidly, listening for sand-muted footsteps, when a flash of distant metal and movement caught her gaze in the glaring light. She felt cold, then hot, then rather like laughing.
She had a terrible idea.
Turel would be proud, she thought of her friend.
The Arconan grabbed the lightsaber at her lower back in one hand and drew her pistol with the other. Then she crept slowly towards the nearest bit of rubble jutting out from the dunes as the hum of Inahj's saber grew closer.
Positive Takeaways
What stood out to me was the first few paragraphs. You did the groundwork wonderfully in building up the match. This is where, as a reviewer, I would point your gaze on where to expand. Maintaining this quality throughout would really shore up the story and grant you an advantage in most matches.
Areas For Improvement
One of the easiest mistakes one can make in regards to syntax is repetition. This is mostly when you repeat a concept. Can work great when used to emphasise a point, but that's not the case with the following:
Expected and then that he had been told to expect. Rather than driving the point home, it can have a retreading effect.
Another area that drew my attention was the expectation of reader knowledge. With references to the "DIA files" I, despite having spent a short time in Arcona, had no idea what you were referring to. Without checking the wiki, I still probably wouldn't. You can't make assumptions about what the reader does and doesn't know. Even if that means name dropping it in full at least once.
The final issue I found relates to the story of this post. A good rule of thumb is that at least a third of the opening post's content should relate to the conflict, and the combat specifically. Other than a stand-off, this post is almost entirely dialogue. Not the most engaging dialogue either. The other factor that doesn't help is that your point of view keeps slipping between omniscient and limited. In the beginning, we have a limited view with only the knowledge Andrelious has. Then you start slipping in Satsi's thoughts as well and her perspective. This shift to omniscient is jarring for a reader, as we suddenly have more knowledge than we did prior without that expectation built up to begin with.