This fight was sick as hell.
This is one of the best depictions of the "redirecting style" of martial arts I have ever seen, the way it depicts how he sees force and motion, it blends perfectly with the obviously superhuman level feats they are achieving but you can see the "ground" where his ability is based upon.
Artificial life still gives levels
This is highly exploitable
It depends... if that thing demands time, skill, and special resources to make, in the already scarce environment they are in now because of the calamity, making it would already be a monolithic and expensive endeavor, but to make it just to feed him exp?
I don't think it would be possible, if that thing gave all that exp, considering the situation of the world, even with that elf's intellect mass producing it to that level of power should be close to impossible, if not simply unviable.