If you are looking for the boon, drawbacks, and specials they are in the playtest docs part of the download page. If you find and click the fighter form creation kit it will have everything there
Viewing post in THE (long awaited) THREADs UPDATE comments
Apologies for the late response. Boogal13 is right that all the LUMEN related combat rules are in the playtest documents for now. I am currently working on porting them over to the gitbook so it’s more coherent and accessible.
Additionally, I will be porting everything (once finalized) into PDF and EPUB formats for offline use.