The genre promise (what readers expect to feel on every page)
A LitRPG reader wants more than fantasy action. They expect (1) mechanics that matter, (2) visible progression signals, and (3) tactical problem-solving shaped by stats and resources. Your craft route is therefore: define the system rules → encode them into scenes → let progression create new story problems. If a level-up happens, a new capability must create new options and new risks. If the system announces a skill, it should alter what the protagonist can attempt next, not only describe it once.