Thanks for this reply.
I'm my view: she is not only a demon of war, she is partly THE god of war, which is more like a concept (as war is a part of nature, born from struggle and fighting). Others demons are just like her: parts of a greater thing, which in the end is the concept of it.
The final part is exactly a reference to MMOs, and essentially give a explanation to "why demons of war keep battling". They are in in sort of "farming cycle", constantly respawning in this universe wide battlefield...
She do it to earn acheviments, and unlock new cosmetics (hence the name of the tale). The final of the tale is she going back to the "farming" cycle, she just got a new cosmetic, and gona try it...
I see the problem: to much implicit concepts tangled together: if you have to explain stuff outside your story, then it is not well written.
Thanks for taking the time to criticize.