Yeah, I'm definitely reminded of a space opera. Which is to say some bits of Halo here and there.
Apart from typos and the grammar being meh IMO, this was a good read! I would read more from this universe, because it seems like a pretty good universe.
The ending, though…it's fitting for a WL story, even if it's a little unsatisfying after all that buildup. I can see if you ran with it under time constraints, and I'd probably do the same. But, (again IMO) it probably would have been a little better for some relatively different thing to happen. Iunno.