So, you're a new writer, huh? Well, welcome to AC-Fiction! We always like to see a new face (and a new story) show up here.
I've read the first two parts, and I must say that you have a very interesting writing voice. Most of the stories here read like books, which they are intended to be. Yours reads like a story being told to me, and me alone. It's a very personal voice, and I find it a welcome change.
I myself tried to write a solo story with custom factions, so I'll give you some advice. Make sure your readers know what this 'fogotten faction' stands for, if anything. Everyone knows the Hive, and the Spartans, and the Usurpers. But custom factions are harder. So try not to cut any corners in faction description.
Also, when you write solo, you have total control of the plot. This makes writing it easier, since you know what you're doing, but less exciting, since there are no other writers to throw you off. Try not to get discoraged or bored with it. After I finished 13 parts or so with mine, I stopped out of boredom. Don't let this happen to you!
Of course, you can use Jasonian in your story, if you wish. Some background on him: (and me in real life) He's kinda quiet and shy, and prefers to hang around in the shadows. But he knows quite a bit what's going on around him, and will tell people if they ask nicely. He's loyal, but not above using people to further his own needs. Of course, this background is optional, so turn him into a noisy rude soldier if it fits the story I know you said you wouldn't kill us off, but you have my permission to do so, if you choose.
Good luck to you, and I await part three!