The Guta moon greets me in its full glory, illuminating the empty training hall. I think you could tell us what the light is like. Is it silver, bluish, bright? "The Guta Moon reveals the training hall to me in details of pale silver." Or something along those lines. It’s my favorite room in the Acquisition’s space station,
cavernous, unnecessary with a domed starlit ceiling replicating the chill and quietness of deep space. I lift my arms, spinning in a circle as the hydrate mist falls over my skin. Is he/she clothed? Naked? Each drop is ice and my flesh prickles. Good sensory image, you could add an involuntary reaction as well, such as...well, maybe not that, I don't know the target audience. But a shiver, or quiver, or something. With a gratifying sound, I don't know what a gratifying sound is, so show me I cross over that's really tame. How about something like "I slink to the windows like a jungle cat, stretching as I go." This reveals to us how he/she seems themselves, as well as describing movement to the windows, stretching as I go.
lays lies i n wait waiting in the space harbor below. I press my palm nothing wrong with 'palm', but I suggest 'cheek' as being more intimate against the cool curved glass and imagine I’m at the helm, with nothing but the silver-speckled darkness.
It’s here. I do this a lot, too. But it's jarring. Better to drop the hint at mystery and say 'The time has arrived and today I face...'
Today I face my final trial and it’ll be mine. I have no idea what this means. Again, I think you're shooting for a hint of mystery but it just confuses the reader. These are the stakes, a crucial point, so we, the readers, really need to understand it/them clearly. I warm up my wrists, still sore from yesterday’s practice. The others would rather rest before their final. Fools. Whatever the Admirals have planned, we’ll need our bodies fired and prepped—not brain-hazed from alcohol and cool muscles. I place my palms on the ground and swing into a handstand. This is all quite good, nothing really to change, except the reader doesn't know what it means because you've been coy about the what is going on. If the reader had a clearer idea, this would all make sense and be very well written. You're very close to nailing this, but you're getting in your own way.
Even upside down, the moon and the planet it orbits looks the same. This feels awkward. "Even when I'm upside down, Vivimont and its moon appear identical." I go through my
series of flips and cartwheels, pushing myself until I’m almost hovering over the floor. I stop in the center of the room, activating the ground and roof magnets. Here my armor lifts me until I sway in mid-air. You can probably get away with this, but once again it feels like the author is being coy with the details being shared. And again, I have this tendency as well, so I recognize it in others. At the beginning of the paragraph, something simple like "I chose the full battle array for training, despite the added difficulty from the extra weight and restrictions on my movements. The harder I work now, the easier it will be later."
“STES, activate sword sequence with weighted sensory,” I say to the room. This is where the unnecessary accoutrements will force me to improve.
“Trainee Tethys, good rising. Activating sword sequence with weighted sensory. Would you prefer the qualaron hooks or the matchu blades? ”
The training simulator’s voice fills the room. Unnecessary.
“Do you really have to ask?” Too cute and doesn't match the tone of what came before. Here's a chance to really ratchet up our attention. "Qualaron, level five."
"Trainee Tethys, I am required to inform you that you have never attempted level five before and your choice of full battle array makes successful completion statistically improbable. Do you wish to proceed?"
“Activating qualaron sequence. Fruitful training Tethys.”
As always, these are mere suggestions, I like what's here a lot. Hope it helps.