A fine job indeed describing the backstory of Altair. From what we know, we can assume that Altair is a person driven by rage and guilt. The backstory supports this, and does a very nice job of setting up for that kind of character plot. The only question I have for this chapter is who is Altair? I assume that he would be introduced later on, or he is in fact number one.
And the little foreshadowing at the end, combined with the story's description, hints at that the people who turn into the 13 Order are no longer themselves, but instead a different entity, that simply remember their "past" life. This is assuming Altair is one of the Orders however. To wrap up, the backstory was satisfactory, and the fight scene was enough for me to become more hype for future fights. My compliments to the chef.