First off, I apologize in advance. I'm not exactly the most skilled at critiquing stories. I'm more of a reader than a reviewer, much less an editor.
I see what you meant by the steep learning curve. I feel like it's a bit too steep. Too much information is given all at once. It would be better, methinks, if you introduced information one bit at a time.
On a related note, I feel that the steep learning curve interferes somewhat with your characterization. It's hard to understand a character when I'm still trying to understand the setting in which he lives.
On a positive note, I can tell you put a solid effort into developing the setting, and I want to see more if it, and understand it better.
I like the work you did with the linguistics. I think it adds to the alien setting of the story.
You also did a nice job with making the different creatures feel alien without making then so different from humans that they're hard to understand.
On a personal note, I feel the concluding sentence is a bit weak. Just my opinion, but it feels a bit too wordy for a chapter ending.
Overall, I like the story. The setting seems very detailed. I'd love to see what happens next.